mentum

men´tum

n.

1.

(Zool.) The front median plate of the labium in insects. See Labium.

Thesaurus

Noun	1.	mentum - a projection like a chin formed by the sepals and base of the column in some orchids orchid, orchidaceous plant - any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors plant part, plant structure - any part of a plant or fungus
	2.	mentum - the protruding part of the lower jaw chin goatee - a small chin beard trimmed to a point; named for its resemblance to a goat's beard buccula, double chin - a fold of fatty tissue under the chin face, human face - the front of the human head from the forehead to the chin and ear to ear; "he washed his face"; "I wish I had seen the look on his face when he got the news" feature, lineament - the characteristic parts of a person's face: eyes and nose and mouth and chin; "an expression of pleasure crossed his features"; "his lineaments were very regular"
	3.	mentum - a projection below the mouth of certain mollusks that resembles a chin insect - small air-breathing arthropod body part - any part of an organism such as an organ or extremity orchid, orchidaceous plant - any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors