Term: upcast: air passage consisting of a ventilation shaft through which air leaves a mine
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: pinning: a mutual promise of a couple not to date anyone else; on college campuses it was once signaled by the giving of a fraternity pin
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: hamadryad: the nymph or spirit of a particular tree
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: balloon: large tough nonrigid bag filled with gas or heated air
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: densitometer: a measuring instrument for determining optical or photographic density
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: reconstruction: the activity of constructing something again
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: difficulty: a factor causing trouble in achieving a positive result or tending to produce a negative result
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: loch: a long narrow inlet of the sea in Scotland (especially when it is nearly landlocked)
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: tay: a branch of the Tai languages
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: production: the creation of value or wealth by producing goods and services
Broader: air passage: a duct that provides ventilation (as in mines) | Unrelated: heavyweight: a wrestler who weighs more than 214 pounds