mentum

/ˈmɛntəm/

Definitions of mentum

1. noun

   the protruding part of the lower jaw
   synonyms: chin

   types:

   buccula, double chin

   a fold of fatty tissue under the chin

   type of:

   feature, lineament

   the characteristic parts of a person's face: eyes and nose and mouth and chin
2. noun

   a projection below the mouth of certain mollusks that resembles a chin
   type of:

   body part

   any part of an organism such as an organ or extremity
3. noun

   a projection like a chin formed by the sepals and base of the column in some orchids
   type of:

   plant part, plant structure

   any part of a plant or fungus