Meaning

noun the lowermost portion of a structure partly or wholly below ground level; often used for storage

noun an excavation where root vegetables are stored

noun storage space where wines are stored

originFrom Middle English celer, seler, from Anglo-Norman celer, Old French celier (modern cellier), from Late Latin cellārium, from Latin cella. Doublet of cellarium.

Etymology from Wiktionary, CC BY-SA 3.0