The Collaborative International Dictionary of English v.0.48:

Crude \Crude\ (kr[udd]d), a. [Compar. Cruder (-[~e]r); superl.
   Crudest.] [L. crudus raw; akin to cruor blood (which flows
   from a wound). See Raw, and cf. Cruel.]
   1. In its natural state; not cooked or prepared by fire or
      heat; undressed; not altered, refined, or prepared for use
      by any artificial process; raw; as, crude flesh. "Common
      crude salt." --Boyle.
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            Molding to its will each successive deposit of the
            crude materials.                      --I. Taylor.
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   2. Unripe; not mature or perfect; immature.
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            I come to pluck your berries harsh and crude.
                                                  --Milton.
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   3. Not reduced to order or form; unfinished; not arranged or
      prepared; ill-considered; immature. "Crude projects."
      --Macaulay.
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            Crude, undigested masses of suggestion, furnishing
            rather raw materials for composition. --De Quincey.
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            The originals of Nature in their crude
            Conception.                           --Milton.
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   4. Undigested; unconcocted; not brought into a form to give
      nourishment. "Crude and inconcoct." --Bacon.
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   5. Having, or displaying, superficial and undigested
      knowledge; without culture or profundity; as, a crude
      reasoner.
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   6. (Paint.) Harsh and offensive, as a color; tawdry or in bad
      taste, as a combination of colors, or any design or work
      of art.
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