- A person employed to bid at an auction in order to raise the prices for the auctioneer or seller.
From by- + bidder.
- (US) One who bids at an auction on behalf of the auctioneer or owner, for the purpose of driving up the price.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.