Definition of St. Helens, Mount in English:

St. Helens, Mount

Syllabification: St. Hel·ens, Mount
An active volcano in southwestern Washington, in the Cascade Range, that rises to 8,312 feet (2,560 m). A dramatic eruption in May 1980 reduced its height by more than a thousand feet and spread volcanic ash and debris over a vast area. In late 2004, a massive extrusion of lava had geologists monitoring the possibility of another explosive eruption.

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Word of the day noisome
Pronunciation: ˈnɔɪs(ə)m
having an extremely offensive smell