from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A jawlike appendage of an arthropod.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of the mouth appendages of the Arthropoda.
from the GNU version of the Collaborative International Dictionary of English
- n. Any one of the mouth appendages of the Arthropoda. They are known as mandibles, maxillæ, and maxillipeds.
from The Century Dictionary and Cyclopedia
- n. In zoology, one of the appendages of the mouth of an arthropod or articulate animal, as a mandible, maxilla, maxilliped, gnathopod, etc.
Greek gnathos, jaw; see gnathic + -ite1.(American Heritage® Dictionary of the English Language, Fourth Edition)
Ancient Greek (Wiktionary)
Here are some other words that begin with a silent g. gnarled, gnash, gnathite, gnocchi and everyone's favorite hallucination, a ngood (why can't the n be silent?) old gnome.