the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps
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"
例句
The partner in bridge who exposes his or her hand to be played by the declarer.明手桥牌中定约人的搭档，即把所持牌亮出的人
