The Collaborative International Dictionary of English v.0.48:

Quick \Quick\, a. [Compar. Quicker; superl. Quickest.] [As.
   cwic, cwicu, cwucu, cucu, living; akin to OS. quik, D. kwik,
   OHG. quec, chec, G. keck bold, lively, Icel. kvikr living,
   Goth. qius, Lith. q[=y]vas, Russ. zhivoi, L. vivus living,
   vivere to live, Gr. bi`os life, Skr. j[imac]va living,
   j[imac]v to live. Cf. Biography, Vivid, Quitch grass,
   Whitlow.]
   1. Alive; living; animate; -- opposed to dead or
      inanimate.
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            Not fully quyke, ne fully dead they were. --Chaucer.
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            The Lord Jesus Christ, who shall judge the quick and
            the dead at his appearing and his kingdom. --2 Tim.
                                                  iv. 1.
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            Man is no star, but a quick coal
            Of mortal fire.                       -- Herbert.
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   Note: In this sense the word is nearly obsolete, except in
         some compounds, or in particular phrases.
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   2. Characterized by life or liveliness; animated; sprightly;
      agile; brisk; ready. " A quick wit." --Shak.
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   3. Speedy; hasty; swift; not slow; as, be quick.
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            Oft he to her his charge of quick return
            Repeated.                             --Milton.
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   4. Impatient; passionate; hasty; eager; eager; sharp;
      unceremonious; as, a quick temper.
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            The bishop was somewhat quick with them, and
            signified that he was much offended.  -- Latimer.
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   5. Fresh; bracing; sharp; keen.
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            The air is quick there,
            And it pierces and sharpens the stomach. -- Shak.
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   6. Sensitive; perceptive in a high degree; ready; as, a quick
      ear. "To have an open ear, a quick eye." --Shak.
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            They say that women are so quick.     --Tennyson.
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   7. Pregnant; with child. --Shak.
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   Quick grass. (Bot.) See Quitch grass.

   Quick match. See under Match.

   Quick vein (Mining), a vein of ore which is productive, not
      barren.

   Quick vinegar, vinegar made by allowing a weak solution of
      alcohol to trickle slowly over shavings or other porous
      material.

   Quick water, quicksilver water.

   Quick with child, pregnant with a living child.
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   Syn: Speedy; expeditious; swift; rapid; hasty; prompt; ready;
        active; brisk; nimble; fleet; alert; agile; lively;
        sprightly.
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WordNet (r) 3.0 (2006):

quickest
    adv 1: most quickly [syn: quickest, fastest]