n. 25B6; verb
he tweaked the boy's ear : PULL, jerk, tug, twist, twitch, pinch, squeeze.
(informal) the programme can be tweaked to suit your needs : ADJUST, modify, alter, change, adapt; refine.
25B6; noun
he gave her hair a tweak : PULL, jerk, tug, twist, pinch, twitch, squeeze.
(informal) a few minor tweaks were required : ADJUSTMENT, modification, alteration, change; refinement.