Tunnel and Upcast

Tunnel noun - A passageway through or under something, usually underground (especially one for trains or cars).

Upcast and tunnel are semantically related. In some cases you can use "Upcast" instead a noun "Tunnel".

Nearby Words: tunneled, tunneling, tunnelled

Upcast noun - Air passage consisting of a ventilation shaft through which air leaves a mine.

Tunnel and upcast are semantically related. Sometimes you can use "Tunnel" instead a noun "Upcast".