D defs.my
Entry 2 senses Webster, 1913

Fundament

· Fun·da·ment · IPA /ˈfʌn.də.mənt/
01 n. Foundation.
  1. 1.
    Foundation.[Obs.]
  2. 2.
    The part of the body on which one sits; the buttocks; specifically (Anat.), the anus.(Anat.)