What is the meaning of squinting?

verb

• Cross one's eyes as if in strabismus.
  • usage: "The children squinted so as to scare each other"
  • synonyms: squint, squinch
• Be cross-eyed; have a squint or strabismus.
  • synonyms: squint
• Partly close one's eyes, as when hit by direct blinding light.
  • usage: "The driver squinted as the sun hit his windshield"
  • synonyms: squint

adjective

• Having eyes half closed in order to see better.
  • usage: "squinched eyes"
  • synonyms: squinched