The Collaborative International Dictionary of English v.0.48:

Blink \Blink\ (bl[i^][ng]k), v. i. [imp. & p. p. Blinked
   (bl[i^][ng]kt); 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[imac]can to shine, E. bleak. [root]98. See Bleak; cf.
   1st Blench.]
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   1. To wink; to twinkle with, or as with, the eye.
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            One eye was blinking, and one leg was lame. --Pope
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   2. To see with the eyes half shut, or indistinctly and with
      frequent winking, as a person with weak eyes.
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            Show me thy chink, to blink through with mine eyne.
                                                  --Shak.
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   3. To shine, esp. with intermittent light; to twinkle; to
      flicker; to glimmer, as a lamp.
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            The dew was falling fast, the stars began to blink.
                                                  --Wordsworth.
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            The sun blinked fair on pool and stream . --Sir W.
                                                  Scott.
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   4. To turn slightly sour, as beer, mild, etc.
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The Collaborative International Dictionary of English v.0.48:

Blink \Blink\, v. t.
   1. To shut out of sight; to avoid, or purposely evade; to
      shirk; as, to blink the question.
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   2. To trick; to deceive. [Scot.] --Jamieson.
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The Collaborative International Dictionary of English v.0.48:

Blink \Blink\, n. [OE. blink. See Blink, v. i. ]
   1. A glimpse or glance.
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            This is the first blink that ever I had of him.
                                                  --Bp. Hall.
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   2. Gleam; glimmer; sparkle. --Sir W. Scott.
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            Not a blink of light was there.       --Wordsworth.
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   3. (Naut.) The dazzling whiteness about the horizon caused by
      the reflection of light from fields of ice at sea; ice
      blink.
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   4. pl. [Cf. Blencher.] (Sporting) Boughs cast where deer
      are to pass, to turn or check them. [Prov. Eng.]
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WordNet (r) 3.0 (2006):

blink
    n 1: a reflex that closes and opens the eyes rapidly [syn:
         blink, eye blink, blinking, wink, winking,
         nictitation, nictation]
    v 1: briefly shut the eyes; "The TV announcer never seems to
         blink" [syn: blink, wink, nictitate, nictate]
    2: force to go away by blinking; "blink away tears" [syn:
       wink, blink, blink away]
    3: gleam or glow intermittently; "The lights were flashing"
       [syn: flash, blink, wink, twinkle, winkle]