Term: upcast: air passage consisting of a ventilation shaft through which air leaves a mine
Candidate hypernym: air passage: a duct that provides ventilation (as in mines) → 1
Candidate hypernym: 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 → 0
Candidate hypernym: hamadryad: the nymph or spirit of a particular tree → 0
Candidate hypernym: balloon: large tough nonrigid bag filled with gas or heated air → 0
Candidate hypernym: densitometer: a measuring instrument for determining optical or photographic density → 0
Candidate hypernym: reconstruction: the activity of constructing something again → 0
Candidate hypernym: difficulty: a factor causing trouble in achieving a positive result or tending to produce a negative result → 0
Candidate hypernym: loch: a long narrow inlet of the sea in Scotland (especially when it is nearly landlocked) → 0
Candidate hypernym: tay: a branch of the Tai languages → 0
Candidate hypernym: production: the creation of value or wealth by producing goods and services → 0
Candidate hypernym: heavyweight: a wrestler who weighs more than 214 pounds → 0