Undulate - Definition

adj 1: having a wavy margin and rippled surface
v 1: stir up (water) so as to form ripples [syn: ripple,
ruffle, riffle, cockle, undulate]
2: occur in soft rounded shapes; "The hills rolled past" [syn:
roll, undulate]
3: move in a wavy pattern or with a rising and falling motion;
"The curtains undulated"; "the waves rolled towards the
beach" [syn: roll, undulate, flap, wave]
4: increase and decrease in volume or pitch, as if in waves;
"The singer's voice undulated"