The Collaborative International Dictionary of English v.0.48:

Living \Liv"ing\ (l[i^]v"[i^]ng), a. [From Live, v. i.]
   1. Being alive; having life; as, a living creature. Opposed
      to dead.
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   2. Active; lively; vigorous; -- said esp. of states of the
      mind, and sometimes of abstract things; as, a living
      faith; a living principle. " Living hope. " --Wyclif.
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   3. Issuing continually from the earth; running; flowing; as,
      a living spring; -- opposed to stagnant.
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   4. Producing life, action, animation, or vigor; quickening.
      "Living light." --Shak.
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   5. Ignited; glowing with heat; burning; live.
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            Then on the living coals wine they pour. --Dryden.
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   Living force. See Vis viva, under Vis.

   Living gale (Naut.), a heavy gale.

   Living rock or Living stone, rock in its native or
      original state or location; rock not quarried. " I now
      found myself on a rude and narrow stairway, the steps of
      which were cut out of the living rock." --Moore.

   The living, those who are alive, or one who is alive.
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WordNet (r) 3.0 (2006):

living rock
    n 1: usually unbranched usually spineless cactus covered with
         warty tubercles and having magenta flowers and white or
         green fruit; resembles the related mescal; northeastern
         Mexico and southwestern United States [syn: living rock,
         Ariocarpus fissuratus]
    2: highly succulent stemless clump-forming plants with grey-
       green leaves similar in texture to lumps of granite; South
       Africa [syn: living granite, living rock, stone mimicry
       plant]