the player who first named the strain of the final contract for his or her side and who manipulates both his own cards and partner's during the play.

The person who plays the hand in the partnership that wins the contract; by the rules, the declarer is the first player in the partnership who had called the final denomination in the bidding stage. The other partner becomes the dummy.

the player who first named the suit (or no-trump) specified in the final contract.

someone who claims to speak the truth; "a bold asserter"; "a declarer of his intentions"; "affirmers of traditional doctrine"; "an asseverator of strong convictions"; "an avower of his own great intelligence"

another word for the picker

One who makes known or proclaims; that which exhibits.