Source : Webster's Revised Unabridged Dictionary (1913)

Malacopoda \Mal`a*cop"o*da\, n. pl. [NL., fr. Gr. ? soft +
   -poda.] (Zo["o]l.)
   A class of air-breathing Arthropoda; -- called also
   {Protracheata}, and {Onychophora}.

   Note: They somewhat resemble myriapods, and have from
         seventeen to thirty-three pairs of short, imperfectly
         jointed legs, two pairs of simple jaws, and a pair of
         antenn[ae]. The tranche[ae] are connected with numerous
         spiracles scattered over the surface of the body.
         {Peripatus} is the only known genus. See {Peripatus}.

Peripatus \Pe*rip"a*tus\, n. [NL., fr. Gr. ? a walking about.]
   (Zo["o]l.)
   A genus of lowly organized arthropods, found in South Africa,
   Australia, and tropical America. It constitutes the order
   Malacopoda.

Source : WordNet®

peripatus
     n : any of numerous velvety-skinned wormlike carnivorous animals
         common in tropical forests having characteristics of both
         arthropods and annelid worms [syn: {onychophoran}, {velvet
         worm}]