\Pa*rag"na*thus\, n.; pl. {Paragnathi}. [NL. See
{Para-}, and {Gnathic}.] (Zo["o]l.)
(a) One of the two lobes which form the lower lip, or
    metastome, of Crustacea.
(b) One of the small, horny, toothlike jaws of certain
    annelids.