Definition of ripples:
(n) :
A moving disturbance, or undulation, in the surface of a fluid.
(n) :
A sound similar to that of undulating water.
(v) :
(figurative) (intransitive) To move like the undulating surface of a body of water; to undulate.
(v) :
(intransitive) To propagate like a moving wave.
(v) :
(intransitive) To make a sound as of water running gently over a rough bottom, or the breaking of ripples on the shore.
(v) :
(transitive) To shape into a series of ripples.