Declarer n. : One who makes known or proclaims; that which exhibits.

Example:
How can I see the Declarer's hand and also the dummy?

Taxonomy
suit, card, opponents, trick, trump, score, agreement, opening bid, game, bids, partnership, partnership agreement, raise, honor, notrump, pairs, hands, number of cards.

Defination from the web:
declarer. ... A statement by declarer about how the remaining unplayed tricks will be won or lost. ... 2) (Said of trump contracts) Declarer's ability to manage the trump suit successfully. ...