Pronunciation: (mid'rif),[key] —n. 1. diaphragm (def. 1).
2. the middle part of the body, between the chest and the waist.
3. the part of a dress or bodice, usually close-fitting, that covers this part of the body.
4. a garment that exposes this part of the body.
—adj. noting or pertaining to the middle part of the human body, the part of a garment that covers it, or a garment that exposes it.