corsage (n.) Look up corsage at Dictionary.com
late 15c., "size of the body," from Old French cors "body," from Latin corpus "body" (from PIE root *kwrep- "body, form, appearance"). The meaning "body of a woman's dress, bodice" is from 1818 in fashion plates translated from French; 1843 in a clearly English context. Sense of "a bouquet worn on the bodice" is 1911, American English, apparently from French bouquet de corsage "bouquet of the bodice."