1a formal or explicit statement or announcement:a declaration of love the formal announcement of the beginning of a state or condition:the declaration of war a written public announcement of intentions or of the terms of an agreement: all students must sign the following declaration (also declaration of the poll) British a public official announcement of the votes cast for candidates in an election. Law a plaintiff’s statement of claims in proceedings. Law an affirmation made in place of an oath. the naming of trumps in bridge, whist, or a similar card game. an announcement of a combination held in certain card games.
2 Cricket an act of declaring an innings closed.