men·tum /ˈmɛntəm/
  頦; 下顎
  men·tum /ˈmɛntəm/ 名詞
  (拉)頦
  men·tum n.  Zool. The front median plate of the labium in insects. See Labium.
  3. Hence:A list of dishes form which to choose at a restaurant; a bill of fare.
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  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