bidder

transitive verb bade or bid, bidden or bid, bidding, bid

1. Obsolete to beseech or implore
2. to command, ask, or tell: do as you are bidden
3. to offer (a certain amount) as the price or fee that one will pay or accept
4. to declare openly: to bid defiance
5. to express in greeting or taking leave: bid farewell to your friends
6. ☆ Informal to offer membership to: the fraternity may bid five new men
7. Now Chiefly Dial. to invite
8. Card Games to state (the number of tricks or points one proposes to take and, in bridge, whether one proposes to play the hand with a specified suit as trump or with no suit as trump) in an effort to win the right to name trump

intransitive verb

noun

1. a bidding of an amount
2. the amount bid
3. a chance to bid
4. an attempt or try: a bid for fame
5. ☆ Informal an invitation, esp. to become a member
6. Card Games
   1. the act of bidding
   2. the number of tricks, suit, etc. stated in a bid
   3. a player's turn to bid