ripple ripple /ˈrɪpəl/

noun

1. () A small wave on the surface of a liquid  ( riffle , rippling , wavelet , ripple )
   a small wave on the surface of a liquid
     The stone created ripples on the calm surface of the lake.
   The stone created ripples on the calm surface of the lake.
   
   
2. () (electronics) an oscillation of small amplitude imposed on top of a steady value  ( ripple )
   (electronics) an oscillation of small amplitude imposed on top of a steady value
   

verb

1. () Stir up (water) so as to form ripples  ( cockle , riffle , ruffle , ripple , undulate )
   stir up (water) so as to form ripples
   
2. () Flow in an irregular current with a bubbling noise  ( babble , bubble , burble , guggle , gurgle , ripple )
   flow in an irregular current with a bubbling noise
    Babbling brooks
   babbling brooks