Meaning

noun a cavity or space in something

noun a small valley between mountains

noun a depression hollowed out of solid matter

originFrom Middle English holow, holowe, holwe, holwȝ, holgh, from Old English holh (“a hollow”), from Proto-West Germanic *holh, from Proto-Germanic *hulhwą, perhaps from Proto-Indo-European *ḱólḱwos. Cognate with Old High German huliwa and hulwa, Middle High German hülwe. Related to hole.

Etymology from Wiktionary, CC BY-SA 3.0