Synonyms for Squint (same or very similar meaning)
WordNet sense 1 (abnormal alignment of one or both eyes):
strabismusWordNet sense 2 ((used especially of glances) directed to one side with or as if with doubt or suspicion or envy):
askance, sidelong, askant, asquint, squint-eyed, squintyWordNet sense 3 (cross one's eyes as if in strabismus):
squinchFrom the ODE community, based on WordNetadd/edit