Bible Dictionaries
Undulate

Webster's Dictionary

(1):

(a.) Same as Undulated.

(2):

(v. i.) To move in, or have, undulations or waves; to vibrate; to wave; as, undulating air.

(3):

(v. t.) To cause to move backward and forward, or up and down, in undulations or waves; to cause to vibrate.

Bibliography Information
Webster, Noah. Entry for 'Undulate'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​u/undulate.html. 1828.