the.com/tweak

means To make a small adjustment to something, often fiddly or fine-tuned rather than sweeping.

from Tweak traces back to Old English twiccian, meaning to pluck or pinch sharply — think of tweaking someone's nose or ear, a quick pinching twist. The physical, slightly mischievous sense of a sharp little pull is the ancestor of today's meaning: a small corrective twist applied to a plan, a setting, or a piece of writing, rather than a face.