ripple

Noun

• (electronics) an oscillation of small amplitude imposed on top of a steady value

• a small wave on the surface of a liquid

Verb

• flow in an irregular current with a bubbling noise
  • babbling brooks
    

• stir up (water) so as to form ripples

Related words

• Synonyms: 
  rippling , riffle , wavelet , babble , guggle , burble , bubble , gurgle , ruffle , cockle , undulate