From Longman Dictionary of Contemporary Englishldoce_043_ichairchair1 /tʃeə $ tʃer/ ●●● S1 W2 noun 1 
[countable]DHF a piece of furniture for one person to sit on, which has a back, a seat, and four legs a kitchen chair They bought a new table and chairs. One of the chair legs was broken.on/in a chair She was sitting on a wooden chair. He sat back in his chair.2 [singular]IN CHARGE OF the position of being in charge of a meeting or committee, or the person who is in charge of it Address your questions to the chair, please.be in the chair Who will be in the chair at tomorrow’s meeting?chair of He was nominated as chair of the board of governors.3 [countable]SEC the position of being a university professorchair of a new Chair of Medicine4 → the chairCOLLOCATIONSverbssit in/on a chairShe sat in her favourite chair.pull/draw up a chair (=move a chair nearer someone or something)Pull up a chair and look at these pictures.take a chair (=sit down in one in a particular place)Brian took a chair beside his wife.lean back in your chairHe leant back in his chair and took out his pipe.sink/slump/flop into a chair (=sit down in one in a tired or unhappy way)Greg groaned and sank into his chair.collapse in/into a chair (=sit down suddenly because you are very tired or upset)Eileen collapsed into a chair and burst out crying.get up from your chair (also rise from your chair formal)He got up from his chair and walked to the window.jump up from your chair (=get up quickly)‘Look at the time!’ she cried, jumping up from her chair.push back your chair (=in order to get up)He pushed back his chair and stood up.lounge in a chair (=sit in one in a very relaxed way)Everyone was outside, lounging in chairs in the sun.adjectivesa comfortable chair (also a comfy chair informal)The hotel had a TV room with some nice comfy chairs.a hard chair (=not comfortable)I sat on a hard chair in the corridor and waited.an empty chair (=with no one using it)She came and sat in an empty chair beside me.a wooden/plastic/leather etc chairIn the kitchen was a table with six wooden chairs around it.a folding chair (=one which you can fold so it is flat)People were sitting on blankets or folding chairs, listening to the outdoor concert.chair + NOUNa chair leg/arm/back/seatThe chair leg has broken.
[countable]DHF a piece of furniture for one person to sit on, which has a back, a seat, and four legs a kitchen chair They bought a new table and chairs. One of the chair legs was broken.on/in a chair She was sitting on a wooden chair. He sat back in his chair.2 [singular]IN CHARGE OF the position of being in charge of a meeting or committee, or the person who is in charge of it Address your questions to the chair, please.be in the chair Who will be in the chair at tomorrow’s meeting?chair of He was nominated as chair of the board of governors.3 [countable]SEC the position of being a university professorchair of a new Chair of Medicine4 → the chairCOLLOCATIONSverbssit in/on a chairShe sat in her favourite chair.pull/draw up a chair (=move a chair nearer someone or something)Pull up a chair and look at these pictures.take a chair (=sit down in one in a particular place)Brian took a chair beside his wife.lean back in your chairHe leant back in his chair and took out his pipe.sink/slump/flop into a chair (=sit down in one in a tired or unhappy way)Greg groaned and sank into his chair.collapse in/into a chair (=sit down suddenly because you are very tired or upset)Eileen collapsed into a chair and burst out crying.get up from your chair (also rise from your chair formal)He got up from his chair and walked to the window.jump up from your chair (=get up quickly)‘Look at the time!’ she cried, jumping up from her chair.push back your chair (=in order to get up)He pushed back his chair and stood up.lounge in a chair (=sit in one in a very relaxed way)Everyone was outside, lounging in chairs in the sun.adjectivesa comfortable chair (also a comfy chair informal)The hotel had a TV room with some nice comfy chairs.a hard chair (=not comfortable)I sat on a hard chair in the corridor and waited.an empty chair (=with no one using it)She came and sat in an empty chair beside me.a wooden/plastic/leather etc chairIn the kitchen was a table with six wooden chairs around it.a folding chair (=one which you can fold so it is flat)People were sitting on blankets or folding chairs, listening to the outdoor concert.chair + NOUNa chair leg/arm/back/seatThe chair leg has broken. Examples from the Corpus
chair• One would stand on a chair and cut a piece off at mealtimes.• Ask some one to hand you a chair with its back against the wall.• He could even talk a little bit about punishing a bean bag chair instead of throwing things.• The child sprang a little awkwardly from his chair and began to parade around his table.• Hicks stayed in his chair as they listened to an engine start up outside the house.• Hey, you're sitting in my chair.• Like a personal chair, a readership is usually conferred on an individual for merit in scholarship, research and published work.• He shot me a look brimful of amusement, then drained his cup and sat back in the chair.• Jones is the chair of the Committee on Science, Space, and Technology.• They pulled the chair forward and told him about it.on/in a chair• Hicks was asleep in a chair, his feet up on the writing desk.• He sat back on a chair, his heart hammering.• Quinn went back to the living room and sat down in a chair.• She sat down in a chair by the hearth.• Timeout is more than putting a kid in a chair.• Creed sat on a chair by the window, gloved hands in his lap, one wrist resting on the other.• She sat in a chair across the coffee table from him.• There's a photo of a cat sitting on a chair, licking its paws.be in the chair• Further details from, National Operations Officer, . is in the Chair. 13.• There were 52 members present and the President, Alistair Shaw, was in the chair.• Margaret Thatcher was in the chair.• Mrs Thatcher was in the chair, with fourteen other member of the Leader's Consultative Committee present. chairchair2 ●○○ verb [transitive] IN CHARGE OFto be the chairperson of a meeting or committee The inquiry was chaired by a judge.→ See Verb tableExamples from the Corpus
chair• A panel reviewing Decree 2 cases started work on March 13,1990, chaired by Ajibola.• The meeting was chaired by Professor Grainger of the Biology Department.• Republicans, in a conciliatory gesture, agreed to let the Democrats chair committees during the period.• Democrats and Republicans had split the powerful Rules Committee, and had chaired half of the Assembly committees.• Her job involves chairing meetings, and producing and circulating the minutes of those meetings.• Henry Hyde, R-Ill., a longtime abortion opponent tapped by Dole to chair the committee crafting the official party platform.• Step forward Tom Pendry, who chairs the Labour Party sports committee.• Biden chaired the Senate hearings.From Longman Business Dictionarychairchair1 /tʃeətʃer/ noun [singular]1COMMERCEthe person who is in charge of a meeting, or the job of being in charge of itthe Chair of the plenary sessionIf you have strong feelings about a situation, declare an interest and suggest that someone else takes the chair (=takes charge of the meeting).2JOBCOMMERCEthe chairman or chairwoman of a company or organization, or the job of chairman or chairwomanchair of the International Commercial Bank of Chinachairchair2 verb [transitive] COMMERCEto be in charge of a meetingHe chaired his first board meeting yesterday afternoon.→ See Verb tableOrigin chair1 (1200-1300) Old French chaiere, from Latin cathedra, from Greek, from kata- ( → CATACLYSM) + hedra “seat” 