"squints" in the noun sense
1. strabismus, squint
abnormal alignment of one or both eyes
2. squint
the act of squinting looking with the eyes partly closed
"squints" in the verb sense
1. squint, squinch
cross one's eyes as if in strabismus
"The children squinted so as to scare each other"
2. squint
be cross-eyed have a squint or strabismus
3. squint
partly close one's eyes, as when hit by direct blinding light
"The driver squinted as the sun hit his windshield"
Source: WordNet® (An amazing lexical database of English)
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