BID, contracts. A bid is an offer to pay a specified price for an article about to be sold at auction. The bidder has a right to withdraw his bid at any time before it is accepted, which acceptance is generally manifested by knocking down the hammer. 3 T. R. 148; Hardin's Rep. 181; Sugd. Vend. 29; Babington on Auct. 30, 42; or the bid may be withdrawn by implication. 6 Penn. St. R. 486; 8, Id. 408. Vide 0ffer.