ETYM FRom Rip.
1. A small wave on the surface of a liquid; SYN. rippling, riffle, wavelet.
2. (Electronics) An oscillation of small amplitude imposed on top of a steady value.

1. To make a babbling, gurgling sound, as of water; SYN. babble, guggle, burble, bubble, gurgle.
2. To stir up (water) so as to form ripples; SYN. ruffle, riffle, cockle, undulate.
Toothed tool for removing seeds from flax or hemp