Definitions
1.VerbTo cause to move in a wavelike motion.
2.VerbTo cause to resemble a wave.
3.VerbTo move in wavelike motions."His tongue undulated."
4.VerbTo appear wavelike.
5.AdjectiveWavy in appearance or form.
6.AdjectiveChanging the pitch and volume of one's voice.
7.Adjectivesinuous, winding up and down.