Englishfor English speakers
rail
Noun
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A rail is a long and thin piece of metal.
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A rail is a long and thin bar along a stairway or path for people to slide their hand along while they walk.
She put her hand on the railing beside the stairs so she wouldn't fall.
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A rail is a surface where trains run on.
The railway stretches across the country.
tunnel
Noun
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A tunnel is a big hole for vehicles to drive in.
This tunnel collapsed a few years ago due to construction faults.
tunnel
Verb
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If you tunnel, you make a tunnel.