side curtain

noun

Definition of side curtain

1 : a curtain attached or fitted so as to be attached at the side of something (such as a vehicle, window, or building) the side curtains of an automobile canvas side curtains for a tent
2a : one of several canvas weather cloths rigged vertically between the deck or the bulwarks and the ridgerope of a ship
b : one of several similar cloths used to close the openings between the hull and the canopy of a small boat