Defn: Of or pertaining to the Alps. [R.] "The Alpen snow." J.
Fletcher.

ALPENGLOW
Al"pen*glow`, n.

Defn: 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.

ALPENHORN; ALPHORN
{ Al"pen*horn`, Alp"horn` }, n. [G. Alpenhorn.]

Defn: A curved wooden horn about three feet long, with a cupped mouthpiece and a bell, used by the Swiss to sound the ranz des vaches and other melodies. Its notes are open harmonics of the tube.

ALPENSTOCK
Al"pen*stock`, n. Etym: [G.; Alp, gen. pl. Alpen + stock stick.]

Defn: A long staff, pointed with iron, used in climbing the Alps.
Cheever.

ALPESTRINE
Al*pes"trine, a. Etym: [L. Alpestris.]

Defn: Pertaining to the Alps, or other high mountains; as, Alpestrine diseases, etc.

ALPHA Al"pha, n. Etym: [L. alpha, Gr. 'a`lfa, from Heb. aleph, name of the first letter in the alphabet, also meaning ox.]