From Longman Dictionary of Contemporary Englishauctioneerauc‧tio‧neer /ˌɔːkʃəˈnɪə $ ˌɒːkʃəˈnɪr/ noun [countable] BOSELLsomeone who is in charge of selling the things at an auction and who calls out how much money has already been offered for something
Examples from the Corpus
auctioneer• Typical of the infectious optimism was Michael Ainslie, president of Sotheby's auctioneers.• Already the auctioneer was positioned outside on the lawn, a table before him and a wooden gavel in his hand.• If the auctioneer is a party to the seller's conduct then he may also be sued.• If the auctioneer is not clear about a bid, he will ask.• A little man called Maurice Tarn was the auctioneer, and the sale was held in the fields alongside the Strathmore Arms.• The auctioneer will make eye contact with the bidders, and often will identify the bidder by number or clothing.• The auctioneers retained possession of the car.From Longman Business Dictionaryauctioneerauc‧tio‧neer /ˌɔːkʃəˈnɪəˌɒːkʃəˈnɪr/ noun [countable]JOBCOMMERCE someone who is in charge of selling goods at an auctionEach bid is a separate offer and a contract is not made until the auctioneer accepts one of them. 