What is "blowholes"

Usage examples of "blowholes".

And beyond that, in the place where they were heading, there stood, like petrified stumps of unbelievable trees, volcanic plugs that had been ejected from seismic blowholes millions of years ago and congealed.

The volcanic rock was laced with crevices, blowholes, fissures and pumice caves that could keep a dragon or two and their riders safe from eyes in the sky.

The two porpoises in the water with Steve had functional blowholes and were programmed to emit the same high-pitched, sonarlike cries as do the real animals.

Only a dusty plain, studded here and there with blowholes and craterletsand the enigmatic works of man, straining at the stars and trying to wrest away their secrets.