cinder cone

noun Geology.

Origin of cinder cone

First recorded in 1840–50

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Nor did these people neglect the gods, for in this crater town, as in the cinder-cone town, a place of worship was prepared.
Canyons of the Colorado
J. W. Powell

cinder cone in Science

[sĭn′dər]

A steep, conical hill consisting of glassy volcanic fragments that accumulate around and downwind from a volcanic vent. Cinder cones range in size from tens to hundreds of meters tall.