verb

• (intransitive) To look with the eyes partly closed, as in bright sunlight, or as a threatening expression.
  "The children squinted to frighten each other."
• (intransitive) To look or glance sideways.
• (intransitive) To look with, or have eyes that are turned in different directions; to suffer from strabismus.
• (intransitive, figurative) To have an indirect bearing, reference, or implication; to have an allusion to, or inclination towards, something.
  "Yet if the following sentence means anything, it is a squinting toward hypnotism."

noun

• (informal) A short look; a peep.
  "—And here she is, says Alf, that was giggling over the Police Gazette with Terry on the counter, in all her warpaint. —Give us a squint at her, says I."
• (radio transmission) The angle by which the transmission signal is offset from the normal of a phased array antenna.
• (architecture) An opening, often arched, through an internal wall of a church, providing an oblique view of the altar.

adj

• (Scotland) askew, not level