1. (n.) A fall, or perpendicular descent, of the water of a river or stream, or a descent nearly perpendicular; a cascade; a cataract.

2. (n.) An arrangement of a woman's back hair over a cushion or frame in some resemblance to a waterfall.

3. (n.) A certain kind of neck scarf.

Niagara cascade cataract chute collapse comedown crash debacle declension declination defluxion descending descension descent down downbend downcome downcurve downfall downflow downgrade downpour downrush downtrend downturn downward trend drop dropping eddy fall falling falls force gravitation inclination linn nappe plummeting pounce rapids riffle sault shoot spout stoop surge swoop vortex watershoot whirlpool