|Origin:||squint (of the eyes) 'looking in different directions' (16-21 centuries), from asquint 'across, obliquely' (13-19 centuries)|
to look at something with your eyes partly closed in order to see better:
Anna squinted in the sudden bright sunlight.
Stop squinting at the screen - put your glasses on.
2 [not in progressive] British EnglishMI
to have each eye looking in a slightly different direction