Meaning

noun a lightweight horse kept for riding only

noun the act of climbing something

noun a land mass that projects well above its surroundings; higher than a hill

originFrom Middle English mount, munt, from Old English munt, from Latin mōns (“a hill, mountain”), from a root seen also in ēmineō (“to project, to protrude”) (English eminent). Doublet of mons. Not related to mound.

Etymology from Wiktionary, CC BY-SA 3.0