Undulate
Part of speech: adjective
Definition: Wavy in appearance or form. Changing the pitch and volume of one's voice. Winding up and down gradually relative to the blade.
Part of speech: verb
Definition: To cause to move in a wavelike motion. To cause to resemble a wave To move in wavelike motions. To appear wavelike.
Ruffle
Part of speech: verb
Definition: To make a ruffle in; to curl or flute, as an edge of fabric.To disturb ; especially, to cause to flutter.
Part of speech: noun
Definition: Any gathered or curled strip of fabric added as trim or decoration.