noun

tunnel

tunnel

The train went through a long tunnel.

The train went through a long tunnel.

They are building a new road tunnel.

They are building a new road tunnel.

((a/an/the)) tunnel ((through/under sth.)) a passage through or under something The tunnel goes under the sea.

Synonyms: underpass, subway, passage

From Old French 'tonnel' meaning 'cask' or 'barrel', referring to the tunnel's shape.

Imagine a long passage that could hold a 'ton' of 'ale' (ton-nel).

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