n. The act of acknowledging; admission; avowal; owning; confession.n. The act of owning or recognizing in a particular character or relationship; recognition as regards the existence, authority, truth, or genuineness; a statement acknowledging something or someone.n. The owning of a benefit received; courteous recognition; the state or quality of being recognized or acknowledged; an expression of thanks.n. Something given or done in return for a favor, message, etc.n. A declaration or avowal of one's own act, to give it legal validity. Also, the certificate of the officer attesting such declaration.