n.

1. 【美】（河流的）急流；浅滩
2. 弹洗（一种洗牌法）
3. （砂金采集槽的）格条

vt.

1. 使波动
2. 迅速翻阅
3. 用分两半交互切入方式洗（牌）

vi.

1. 波动
2. 飞快翻阅

v.

1. turn over something, especially pages, quickly and casually.
   ▸ (riffle through) search quickly through.
   ▸disturb the surface of; ruffle.
2. shuffle (playing cards) by flicking up and releasing the corners of two piles of cards so that they intermingle.

n.

1. an act of riffling.
2. N. Amer. a shallow part of a stream or river.
   ▸a patch of waves or ripples.