* She squinted against the glare of the sun. (Describing a physical action)
* He squinted at the blurry image on the screen. (Describing an action due to difficulty seeing)
* The detective squinted suspiciously at the alibi. (Implying doubt or skepticism)
* The old man squinted through his thick glasses. (Describing a habitual action)
* The children squinted at the colorful fireworks. (Describing a reaction to something bright)
Let me know if you'd like to see some more examples!