Alp, n.

n. [Of Celtic origin: Serv. Virg. Æ. 10, 1: “Omnes altitudines montium a Gallis Alpes vocantur.” Fr. and Gael. alp, alp, a height or eminence, any huge mass or lump.] A very high mountain;—specifically, in the plural, the elevated mountain ranges of Switzerland.

Nor breath of vernal air from snowy alp. Milton. Hills peep o’er hills, and alps on alps arise. Pope.