ac ‧ quaint /əˈkweɪnt/ BrE AmE verb [transitive] formal
[ Date: 1200-1300 ; Language: Old French ; Origin: acointier , from Medieval Latin accognitare , from Late Latin accognoscere 'to know perfectly' , from Latin ad- 'to' + cognoscere 'to know' ]
1 . acquaint yourself with something to deliberately find out about something:
I need to acquaint myself with the new regulations.
2 . acquaint somebody with something to give someone information about something:
You need to acquaint the police with the facts.