There were stomachs, taut and flat, but also undulating bellies, soft and bloated from the breakfast buffet.
Suddenly, the earth convulses, transforming the level tracks into an undulating rollercoaster.
It was well watered, had an undulating surface, and was said to be elevated fifteen hundred feet above the Hudson river.
Everything was dark, the country being an undulating prairie.
I can never forget their motion so full of grace and beauty, waving and undulating like the gentle swell of the ocean.
The surrounding country is undulating and highly picturesque.
They had reached the parting point—a clump of trees on an eminence that overlooked a long stretch of undulating park-like region.
The table lands are undulating, and the soil inclined to clay.
Mr. Badnell went even beyond him, for he held that an undulating railway was much better than a level one for purposes of working.
Several prairies, high, undulating, and bounded by heavy timber.