ETYM French flanc, prob. from Latin flaccus flabby, with n inserted. Related to Flaccid, Flanch, Flange.
1. The side between ribs and hipbone.
2. A cut from the fleshy part of an animal's side between the ribs and the leg.
3. A subfigure consisting of a side of something.
4. The side of military or naval formation; SYN. wing.