sow bug

from WordNet (r) 3.0 (2006)
sow bug
    n 1: terrestrial isopod having an oval segmented body (a shape
         like a sow)
    
from The Collaborative International Dictionary of English v.0.48
Sow \Sow\, n. [OE. sowe, suwe, AS. sugu, akin to s[=u], D. zog,
   zeug, OHG. s[=u], G. sau, Icel. s[=y]r, Dan. so, Sw. sugga,
   so, L. sus. Gr. "y^s, sy^s, Zend. hu boar; probably from the
   root seen in Skr. s[=u] to beget, to bear; the animal being
   named in allusion to its fecundity. [root]294. Cf. {Hyena},
   {Soil} to stain, {Son}, {Swine}.]
   1. (Zool.) The female of swine, or of the hog kind.
      [1913 Webster]

   2. (Zool.) A sow bug.
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   3. (Metal.)
      (a) A channel or runner which receives the rows of molds
          in the pig bed.
      (b) The bar of metal which remains in such a runner.
      (c) A mass of solidified metal in a furnace hearth; a
          salamander.
          [1913 Webster]

   4. (Mil.) A kind of covered shed, formerly used by besiegers
      in filling up and passing the ditch of a besieged place,
      sapping and mining the wall, or the like. --Craig.
      [1913 Webster]

   {Sow bread}. (Bot.) See {Cyclamen}.

   {Sow bug}, or {Sowbug} (Zool.), any one of numerous species
      of terrestrial {Isopoda} belonging to {Oniscus},
      {Porcellio}, and allied genera of the family {Oniscidae}.
      They feed chiefly on decaying vegetable substances.

   {Sow thistle} [AS. sugepistel] (Bot.), a composite plant
      ({Sonchus oleraceus}) said to be eaten by swine and some
      other animals.
      [1913 Webster]
    

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