Source : Webster's Revised Unabridged Dictionary (1913)

Blink \Blink\, n. [OE. blink. See {Blink}, v. i. ]
   1. A glimpse or glance.

            This is the first blink that ever I had of him.
                                                  --Bp. Hall.

   2. Gleam; glimmer; sparkle. --Sir W. Scott.

            Not a blink of light was there.       --Wordsworth.

   3. (Naut.) The dazzling whiteness about the horizon caused by
      the reflection of light from fields of ice at sea; ice
      blink.

   4. pl. [Cf. {Blencher}.] (Sporting) Boughs cast where deer
      are to pass, to turn or check them. [Prov. Eng.]

Blink \Blink\, v. i. [imp. & p. p. {Blinked}; p. pr. & vb. n.
   {Blinking}.] [OE. blenken; akin to dan. blinke, Sw. blinka,
   G. blinken to shine, glance, wink, twinkle, D. blinken to
   shine; and prob. to D. blikken to glance, twinkle, G. blicken
   to look, glance, AS. bl[=i]can to shine, E. bleak. [root]98.
   See {Bleak}; cf. 1st {Blench}.]
   1. To wink; to twinkle with, or as with, the eye.

            One eye was blinking, and one leg was lame. --Pope

   2. To see with the eyes half shut, or indistinctly and with
      frequent winking, as a person with weak eyes.

            Show me thy chink, to blink through with mine eyne.
                                                  --Shak.

   3. To shine, esp. with intermittent light; to twinkle; to
      flicker; to glimmer, as a lamp.

            The dew was falling fast, the stars began to blink.
                                                  --Wordsworth.

            The sun blinked fair on pool and stream . --Sir W.
                                                  Scott.

   4. To turn slightly sour, as beer, mild, etc.

Blink \Blink\, v. t.
   1. To shut out of sight; to avoid, or purposely evade; to
      shirk; as, to blink the question.

   2. To trick; to deceive. [Scot.] --Jamieson.

Source : WordNet®

blink
     n : a reflex that closes and opens the eyes rapidly [syn: {eye
         blink}, {blinking}, {wink}, {winking}, {nictitation}, {nictation}]

blink
     v 1: briefly shut the eyes; "The TV announcer never seems to
          blink" [syn: {wink}, {nictitate}, {nictate}]
     2: force to go away by blinking; "blink away tears" [syn: {wink},
         {blink away}]
     3: gleam or glow intermittently; "The lights were flashing"
        [syn: {flash}, {wink}, {twinkle}, {winkle}]