railroad tunnel

1. 1.

   a tunnel through which the railroad track runs

   Broadertunnel

   Narrowerchunnel

Questions about railroad tunnel

What does railroad tunnel mean?

railroad tunnel means "a tunnel through which the railroad track runs".

Is railroad tunnel a common word?

railroad tunnel is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.