Mandible, a name applied to various jaw-organs—e.g. the third pair of appendages in Crus- taceans, the first pair of true appendages in Insects, the lower jaw in Vertebrates.
Mandible
Chambers's Encyclopaedia, Volume 7: Maltebrun to Pearson, p. 16–17
Source scan(s): p. 0025, p. 0026