(count)
1 a : a small wave on the surface of a liquid
The pebble made ripples in the pond when I threw it in.
1 b : a shape or pattern having small waves
ripples of sand
2 : a sound that gradually becomes louder and then quieter — usually + of
ripples of laughter
3 : something that passes or spreads through or over someone or something — usually singular — often + of
A ripple of fear/excitement spread through the room. (=people in the room suddenly felt fear/excitement)