adj.
1.having a sinuate margin and rippled surface undulate v.
1.stir up (water) so as to form ripples
2.occur in soft rounded shapes
3.move in a wavy pattern or with a rising and falling motion
4.increase and decrease in volume or pitch, as if in waves
Idiom of the Day
keep (someone or something) in check
to keep someone or something under control, to restrain someone or something
The economic policy was designed to keep inflation in check.