What does acknow mean?
The definition of acknow
Ac*know”, v. t.
Etym: [Pref. a- + know; AS. oncnawan.]

1 To recognize. [Obs.] “You will not be acknown, sir.” B. Jonson.
2 To acknowledge; to confess. [Obs.] Chaucer. To be acknown (often with of or on), to acknowledge; to confess. [Obs.] We say of a stubborn body that standeth still in the denying of his fault, This man will not acknowledge his fault, or, He will not be acknown of his fault. Sir T. More.