intransitive. Of fire: (originally) †to move from side to side with an undulating motion (obsolete); (now) to move steadily in a particular direction.

figurative and transferred. To surge, swell, undulate, roll with wavy motion.

intransitive. To move in, or after the manner of, waves; to have a wave-like motion.

Of a field of corn, etc.; To undulate like the waves of the sea.

intransitive. Usually in form puther. Chiefly English regional (northern and midlands) and Scottish. To move in a cloud, as smoke, dust, etc.; to…

transferred. To undulate like a boiling fluid.