n. 瀑布

[ noun ]
a steep descent of the water of a river
<noun.object>

Waterfall \Wa"ter*fall`\, n.
1. A fall, or perpendicular descent, of the water of a river
or stream, or a descent nearly perpendicular; a cascade; a
cataract.

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

3. A certain kind of neck scarf. --T. Hughes.