Source : Webster's Revised Unabridged Dictionary (1913)

Squint \Squint\, v. i. [imp. & p. p. {Squinted}; p. pr. & vb. n.
   {Squinting}.]
   1. To see or look obliquely, asquint, or awry, or with a
      furtive glance.

            Some can squint when they will.       --Bacon.

   2. (Med.) To have the axes of the eyes not coincident; -- to
      be cross-eyed.

   3. To deviate from a true line; to run obliquely.

Squinting \Squint"ing\,
   a. & n. from {Squint}, v. -- {Squint"ing*ly}, adv.

Source : WordNet®

squinting
     adj : having eyes half closed in order to see better; "squinched
           eyes" [syn: {squinched}]