What does acknowledgment mean?
The definition of acknowledgment
Ac*knowl”edg*ment, n.
1 The act of acknowledging; admission; avowal; owning; confession. “An acknowledgment of fault.” Froude.
2 The act of owning or recognized in a particular character or relationship; recognition as regards the existence, authority, truth, or genuineness. Immediately upon the acknowledgment of the Christian faith, the eunuch was baptized by Philip. Hooker.
3 The owning of a benefit received; courteous recognition; expression of thanks. Shak.
4 Something given or done in return for a favor, message, etc. Smollett.
5 A declaration or avowal of one’s own act, to give it legal validity; as, the acknowledgment of a deed before a proper officer. Also, the certificate of the officer attesting such declaration. Acknowledgment money, in some parts of England, a sum paid by copyhold tenants, on the death of their landlords, as an acknowledgment of their new lords. Cowell.

— Confession; concession; recognition; admission; avowal; recognizance.