Definition [Cambridge Dictionary]: 1. a small wave on the surface of water. [涟漪；微波；细浪]

2. a sound or feeling that spreads through a person or group of people, gradually increasing and then becoming smaller. [（声音的）传播起伏；（感情的）逐渐扩散]

3. plain ice cream with thin lines of other flavours in it. [波纹冰激凌]

示例：

The stone she threw caused ripples to spread across the lake.

她扔了一块石头，湖面泛起阵阵涟漪。

A ripple of laughter/applause ran through the crowd.

人群中爆发出/响起了一阵阵笑声/掌声。

News of the war hardly caused a ripple.

战争爆发的消息几乎没有引起任何反响。

The bank crash has had a ripple effect on the whole community.

银行的破产在整个社区引起了连锁反应。