(mineralogy) A light powdery variety of calcite, occurring as an efflorescence.

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

Alternative letter-case form of Mountie.

altitude sickness

A bull calf testicle prepared as food.

plural of Rocky Mountain oyster

(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.