The Collaborative International Dictionary
Endognath
Endognath \En"dog*nath\ ([e^]n"d[o^]g*n[a^]th), n. [Endo- + Gr. gna`qos the jaw.] (Zo["o]l.) The inner or principal branch of the oral appendages of Crustacea. See Maxilla.
Wiktionary
endognath
n. (context zoology English) The inner or principal branch of the oral appendages of crustaceans.