contracts. One who makes an offer to pay a certain price for an article which is for sale. 2. The term is applied more particularly to a person who offers a price for goods or other property, while up for sale at an auction. The bidder is required to act in good faith, and any combination between him and others, to prevent a fair competition, would avoid the sale made to himself. 3. But there is nothing illegal in two or more persons agreeing together to purchase a property at sheriff’s sale, fixing a certain price which they are. willing to give, and appointing one of their number to be the bidder.