a thin piece of wood, slate, metal, asbestos, or the like, usually oblong, laid in overlapping rows to cover the roofs and walls of buildings.

a woman's close-cropped haircut.

Informal . a small signboard, esp. as hung before a doctor's or lawyer's office.

to cover with shingles, as a roof.

to cut (hair) close to the head. ?

hang out one's shingle, Informal . to establish a professional practice

esp. in law or medicine; open an office.

have or be a shingle short, Australian Slang . to be mentally disturbed, mad

or eccentric.