Pronunciation: (pin'up"),[key] —n. 1. a large photograph, as of a sexually attractive person, suitable for pinning on a wall.
2. a person in such a photograph.
3. a device or fixture that is fastened to a wall, as a lamp.
—adj. 1. of, pertaining to, or appearing in a pinup: a pinup girl. 2. designed or suitable for hanging or fastening on a wall: a pinup lamp.Also,pin'-up".