MAXILLAE
Noun
maxillae
plural of maxilla
Source: Wiktionary
MAXILLA
Max*il"la, n.; pl. Maxillæ. Etym: [L., dim. of mala jaw, jawbone.]
1. (Anat.)
(a) The bone of either the upper or the under jaw.
(b) The bone, or principal bone, of the upper jaw, the bone of the
lower jaw being the mandible. [Now commonly used in this restricted
sense.]
2. (Zoöl.)
Definition: One of the lower or outer jaws of arthropods.
Note: There are usually two pairs in Crustacea and one pair in
insects. In certain insects they are not used as jaws, but may form
suctorial organs. See Illust. under Lepidoptera, and Diptera.
Source: Webster’s Unabridged Dictionary 1913 Edition