tricorn

A hat having the brim turned up on three sides.

Having three corners, horns, or projections.

Having three horns or horn-like processes.

A hat with three points or horns; a cocked hat having the brim folded upward against the crown on three sides, producing three angles; hence, by popular misapplication, the hat worn by the French gendarmes, which has only two points: usually written as French, tricorne. See cut 13 under hat.

A three-sided hat with the brim turned up

A three-horned fractal

Having three horns or similar projections

cocked hat with the brim turned up to form three points