undulate

Từ điển American Heritage Dictionary 4th

un·du·late (ŭnʹjə-lāt', ŭnʹdyə-, -də-)undulate leafElizabeth Moralesv. un·du·lat·ed, un·du·lat·ing, un·du·latesv. tr.
1. To cause to move in a smooth wavelike motion.
2. To give a wavelike appearance or form to.v. intr.
1. To move in waves or with a smooth, wavelike motion. See Synonyms at swing.
2. To have a wavelike appearance or form.
3. To increase and decrease in volume or pitch as if in waves.adj. (-lĭt, -lāt')
Having a wavy outline or appearance:
leaves with undulate margins. [From Late Latin undula, small wave, diminutive of Latin unda, wave. See wed-¹ in Indo-European Roots.] unʹdu·la·to'ry (-lə-tôr'ē, -tōr'ē) adj.

• Từ đồng nghĩa / Synonyms:
  roll, flap, wave, ripple, ruffle, riffle, cockle