- A double curve - An S bend - An S-shaped curve - Double curve - S-shaped curve - A molding, the section of which is the form of the letter S,
with the convex part above; cyma reversa. See Illust. under Cyma. - Hence, any similar figure used for any purpose.
- U-shaped curve in a river - A frame of wood, bent into the shape of the letter U, and
embracing an ox's neck as a kind of collar, the upper ends passing
through the bar of the yoke; also, anything so shaped, as a bend in a
river.