keyhole limpet

3 definitions found

keyhole limpet - Collaborative International Dictionary of English v.0.48 :

  Keyhole \Key"hole`\, n.
     1. A hole or apertupe in a door or lock, for receiving a key.
        [1913 Webster]
  
     2.
        (a) (Carp.) A hole or excavation in beams intended to be
            joined together, to receive the key which fastens
            them.
        (b) (Mach.) a mortise for a key or cotter.
            [1913 Webster]
  
     Keyhole limpet (Zool.), a marine gastropod of the genus
        Fissurella and allied genera. See Fissurella.
  
     Keyhole saw, a narrow, slender saw, used in cutting
        keyholes, etc., as in doors; a kind of compass saw or fret
        saw.
  
     Keyhole urchin (Zool.), any one of numerous clypeastroid
        sea urchins, of the genera Melitta, Rotula, and
        Encope; -- so called because they have one or more
        perforations resembling keyholes.
        [1913 Webster]

  Fissurella \Fis`su*rel"la\, n. [NL., dim. of L. fissura a
     fissure.] (Zool.)
     A genus of marine gastropod mollusks, having a conical or
     limpetlike shell, with an opening at the apex; -- called also
     keyhole limpet.
     [1913 Webster]

keyhole limpet - WordNet (r) 2.1 (2005) :

  keyhole limpet
      n 1: marine limpet having a conical shell with an opening at the
           apex [syn: keyhole limpet, Fissurella apertura,
           Diodora apertura]