[1] : The Collaborative International Dictionary of English v.0.48

echidna \echid"na\ -eki^d"n.a, n. l., a viper, adder,
   gr. 'e`chidna.
   1. gr. myth. a monster, half maid and half serpent.
      1913 webster

   2. zo"ol. a genus of monotremata found in australia,
      tasmania, and new guinea. they are toothless and covered
      with spines; -- called also porcupine ant-eater, and
      australian ant-eater.
      1913 webster
see also:
monotremata porcupine ant-eater australian ant-eater 

[2] : WordNet (r) 2.0

echidna
     n 1: new guinea echidnas syn: spiny anteater, anteater
     2: burrowing spine-covered monotreme of australia having a long
        snout and claws for hunting ants and termites syn: spiny
        anteater, anteater
     also: echidnae pl
see also:
spiny anteater anteater spiny anteater echidnae 

[3] : The Free On-line Dictionary of Computing (27 SEP 03)

echidna
     
        constraint logic programming embedded in an
        object-oriented language.  the syntax is an extension of
        edinburgh prolog.
     
        "hierarchical arc consistency applied to numeric processing
        in constraint logic programming", g. sidebottom et al,
        tr-91-06, css-is, simon fraser u, and comp intell 84
        1992.
     
        ftp://cs.sfu.edu/pub/ecl/papers.
     
        e-mail: .
     
        1994-12-08
     
     
see also:
constraint logic programming object-oriented syntax edinburgh prolog lt;ftp://cs.sfu.edu/pub/ecl/papersgt; 

Echidna >> E Words
Echidna, definition of term: Echidna
echidna_pag1.html