Mentum

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  mentum \men"tum\, n. [L., chin.] (Zool.)
     The front median plate of the labium in insects. See
     {Labium}.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:



  mentum
       n 1: a projection like a chin formed by the sepals and base of
            the column in some orchids
       2: the protruding part of the lower jaw [syn: {chin}]
       3: a projection below the mouth of certain mollusks that
          resembles a chin