CHELICERAE
CHELICERA
chelicera
(noun) either of the first pair of fang-like appendages near the mouth of an arachnid; often modified for grasping and piercing
Source: WordNet® 3.1
Noun
chelicerae
plural of chelicera
Source: Wiktionary
CHELICERA
Che*lic"e*ra, n.; pl. Cheliceræ Etym: [NL., fr. Gr. (Zoöl.)
Definition: One of the anterior pair of mouth organs, terminated by a
pincherlike claw, in scorpions and allied Arachnida. They are
homologous with the falcers of spiders, and probably with the
mandibles of insects.
Source: Webster’s Unabridged Dictionary 1913 Edition