D defs.my
Entry 1 sense Webster, 1913

By-bidder

· By·-bid·der · IPA
01 n. One who bids at an auction in behalf of the auctioneer or owner, for the purpose of running up the price of articles.
  1. 1.
    One who bids at an auction in behalf of the auctioneer or owner, for the purpose of running up the price of articles.[U.S.]