a. Of or pertaining to the Alps. [ R. ] “The Alpen snow.” J. Fletcher. [ 1913 Webster ]
n. A reddish glow seen near sunset or sunrise on the summits of mountains; specif., a reillumination sometimes observed after the summits have passed into shadow, supposed to be due to a curving downward (refraction) of the light rays from the west resulting from the cooling of the air. [ Webster 1913 Suppl. ]
‖n. [ G.; Alp, gen. pl. Alpen + stock stick. ] A long staff, pointed with iron, used in climbing the Alps. Cheever. [ 1913 Webster ]