(mineralogy) A soft spongy variety of carbonate of lime.

(Canada, US, historical) A male trapper and explorer who lives in the wilderness.

plural of mountain man

A volcanic area in California, USA.

An optical phenomenon sometimes seen on the summits of mountains when the observer is between the Sun and a mass of cloud or fog. The figures of the observer and surrounding objects are seen projected on the cloud, greatly enlarged and often encircled by rainbow colours.

plural of mountain spectre

plural of mountain mahogany

Any shrub in the genus Cercocarpus in the family Rosaceae, native to the western US and norther Mexico.

An arctic-alpine flowering plant of the species Dryas octopetala

Synonym of Appalachian dulcimer