From Longman Dictionary of Contemporary Englishoneone1 /wʌn/ ●●● S1 W1 number 1 HMNthe number 1 They had one daughter. one hundred and twenty-one pounds Come back at one (=one o'clock). Katie’s almost one (=one year old).2 → one or two3 → in ones and twosoneone2 ●●● S1 W1 pronoun (plural ones) 1 THINGused to mean someone or something of a type that has already been mentioned or is known about ‘Have you got a camera?’ ‘No.’ ‘You should buy one (=buy a camera).' The train was crowded so we decided to catch a later one (=catch a later train).the one(s) (that/who/which) The only jokes I tell are the ones that I hear from you.this one/that one/these ones/those ones I like all the pictures except this one.2 used to refer to a member of a group or pair of people or things The children seemed upset. One was crying. She has two daughters. One is a primary school teacher, the other is a musician.one of One of the girls I work with is getting married. This is one of my favourite books.GRAMMAR: Singular or plural verb?Although one of is followed by a plural noun, you use a singular verb: One of the windows was open.One of them has gone.3 → the one(s) who/that4 → one by one5 → one after another/one after the other6 → (all) in one7 PERSONALLY/YOURSELF formal used to mean people in general, including yourself One can never be too careful. Great pictures make one think.RegisterIn everyday English, people usually use you rather than one:You can never be too careful.8 → I, for one, ...9 → ... for one10 → be one up (on somebody)/get one up on somebody11 → put one over on somebody12 → be at one with somebody/something13 informal used in particular phrases to mean ‘an alcoholic drink’ How about a quick one at the pub?have had one too many (=have drunk too much alcohol)(have) one for the road (=have one last alcoholic drink before you leave a place)14 → the one about ...15 → as one16 → a difficult/hard/good etc one17 → one and the same18 → not/never be one to do something19 → not/never be (a great) one for (doing) something20 → one of us21 → one and all22 → got it in one!23 → little/young ones24 → you are/he is a one → one-to-one
Examples from the Corpus
one• "Do you know where those bowls are?" "Which ones?"• They're closing this factory but building two new ones in Atlanta.• The houses are all pretty similar, but one is a little bigger than the others.• We've been looking at houses but haven't found one we like yet.the one(s) (that/who/which)• On the one hand, he wrote, it pushes nothing out of its way.• On the one hand, she may have a case.• But that is the one question you can never ask.• On the one size are saints Peter and Paul.• Adeane had strongly advised against the controversial speeches of the past year, especially the one to the architectural profession.• Women do not have the one way in which to be beautiful, but many.• For a brief few giddy years, I was the one with the reputation among my sisters of being the wild one.one of• This is one of my favorite books. (have) one for the road• And one for the road, the last word in car hi-fi.oneone3 ●●● S1 W1 determiner 1 ESPECIALLYused to emphasize a particular person or thing One person I find very difficult is Bob. If there’s one thing I can’t stand, it’s people who bite their nails.2 → one day/morning/year etc3 COMPAREused to talk about a particular person or thing in comparison with other similar people or things Why does my card work in one cash machine and not in another?4 → It’s one thing to ... it’s (quite) another to5 → for one thing6 → be one crazy woman/be one interesting job etc7 formalNAME OF A PERSONNAME OF A THING used before the name of someone you do not know or have not heard of before SYN a certain He was accused of stealing a horse from one Peter Wright.Examples from the Corpus
one• Why does my card work in one cash machine and not in another?• She's one crazy lady!• That is one cute kid!• That's one fancy car you've got there.• She was the one friend that I could trust.• The car belongs to one Joseph Nelson.• You're the one person I can trust.• One reason I like the house is because of the big kitchen.• My one regret is that I never told Brad how I felt.• The one thing I don't like about my car is the colour.• The one time I forgot my umbrella was the day it rained.• My one worry is that she'll decide to leave college.one ... another• And we are all beautiful, but we are all strangers to one another.• In particular, the positions of each gear are rather vague and more-than-average effort is needed to shift from one to another.• Perhaps it was inevitable that, one day, Psion would have to make a bold takeover of one sort or another.• The slope can be thought of as a numerical expression of the strength of causal effect of one variable on another.• The two men will spend three hours strangling, choking, gouging, punching, slapping and grabbing one another.• They were quite close to one another, those two villages.• One party supported another with covering fire as best they could.oneone4 ●●● S3 W3 adjective [only before noun] 1 only Her one concern was to get to the door without being seen. Claire is the one person I can trust.2 → one and onlyoneone5 noun [countable usually plural] American English a piece of paper money worth one dollar I don’t have any ones.Examples from the Corpus
one• Do you have any ones?Origin one3 Old English an 