Pĕt'ti-cōat, n.

n. [From petty, small, little, and coat.] 1. A loose under garment worn by females, and covering the lower limbs. 2. The outer space or surface of a target. [Eng.] Petticoat pipe (Mach.), one of a series of short, conical pipes, in a smoke-box, to equalize the draught.