Is it ensure, insure, or assure?
1590s, from Middle French bandage (16c.), from Old French bander "to bind," from bande "a strip" (see band (n.1)).
1774, from bandage (n.). Related: Bandaged; bandaging.
bandage band·age (bān'dĭj)n. A strip of material such as gauze used to protect, immobilize, compress, or support a wound or injured body part. v. band·aged, band·ag·ing, band·ag·es To apply a bandage to.