A room or rooms under a building, and usually below the surface of the ground, where provisions and other stores are kept.
The room, usually underground, where cheeses are left to ripen. Some cheeses, Roquefort is the most famous, are ripened in caves.
A perhaps grandiose term referring to a place where tobacco containers are stored while aging and awaiting use. Cellars should not experience high temperature variation, if at all possible. And cellars with tins should absolutely not experience high levels of humidity, lest plagues of rust be visited upon it.