D defs.my
Entry 3 senses Webster, 1913

Midriff

/(mĭd"rĭf)/ · Mid·riff · IPA /ˈmɪdɹɪf/
01 n. See Diaphragm, n., 2.
  1. 1.
    See Diaphragm, n., 2.(Anat.) See: Diaphragm
  2. 2.
    The middle part of the front of the body, from the waist to the chest.
    “Smote him into the midriff with a stone.” Milton.
  3. 3.
    That part of a garment, especially a dress or bodice, that covers the midriff{2}.