to tweak is a form of:

Tweak



ENGLISH MEANING
noun
1.
A sharp pinch or jerk; a twist or twitch; as, a tweak of the nose.
2.
Trouble; distress; tweag.
verb
1.
(TRANSITIVE) To pinch and pull with a sudden jerk and twist; to twitch; as, to tweak the nose.
1.
A prostitute