›a public sale in which goods or property are sold to the person who offers the most money: sell sth at auctionThe painting was sold at auction for €12 million.hold an auctionWe held a charity auction in aid of the local hospital.be up/come up/go up/be put up for auctionOne of the prints recently came up for auction in the United States.an internet/online/public auctionYou can bid for it in an online auction.