noun An emphatic or formal act of saying, telling or asserting something, by speech or writing; a decisive assertion or proclamation.
noun Specifically, a declaration of love.
noun A list of items for various legal purposes, e.g. customs declaration.
noun The act or process of declaring.
noun The act, by the captain of a batting side, of declaring an innings closed.
noun In common law, the formal document specifying plaintiff's cause of action, including the facts necessary to sustain a proper cause of action, and to advise the defendant of the grounds upon which he is being sued.
noun The specification of an object, such as a variable or function, establishing its existence but not necessarily describing its contents.