(1):
(v. t.) To furnish or give experimental knowledge of; to make (one) to know; to make familiar; - followed by with.
(2):
(v. t.) To communicate notice to; to inform; to make cognizant; - followed by with (formerly, also, by of), or by that, introducing the intelligence; as, to acquaint a friend with the particulars of an act.
(3):
(v. t.) To familiarize; to accustom.
(4):
(v. t.) Acquainted.