MENTUM

n. (Anatomy) chin (Latin)

The mentum is the distal part of the labium in insects. The mentum bears the labial palps and the ligula. Some dragonfly nymphs have menta that bear toothed palps.The mentum also refers to the protruding part of the human chin.The mentum can also refer to a thin projection below the mouth of certain mollusks, as in the family Pyramidellidae.
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Mentum /men·tum/ [L.] chin. men·tum n. pl. men·ta The chin. mentum [L.] chin. [more]Mentum - Community and Resources

Noun
1. a projection like a chin formed by the sepals and base of the column in some orchids
(hypernym) plant part, plant structure
(part-holonym) orchid, orchidaceous plant
2. the protruding part of the lower jaw
(synonym) chin
(hypernym) feature, lineament
(hyponym) double chin, buccula
(part-holonym) face, human face
(part-meronym) goatee
3. a projection below the mouth of certain mollusks that resembles a chin
(hypernym) body part
(part-holonym) insect

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