Arca

from WordNet (r) 3.0 (2006)

Arca
    n 1: type genus of the family Arcidae: ark shells and blood
         clams [syn: {Arca}, {genus Arca}]

from The Collaborative International Dictionary of English v.0.48

Arca \Arca\ n.
   1. 1 the type genus of the family {Arcidae}, including ark
      shells and blood clams.

   Syn: genus {Arca}.
        [WordNet 1.5]

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

ARCA
       Advanced RISC Computing Architecture (ACE, RISC)

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