Akademik

rails
noun
a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll
Syn: ↑track, ↑rail, ↑runway
Derivationally related forms: ↑rail (for: ↑rail)
Hypernyms: ↑bar
Hyponyms: ↑third rail
Part Holonyms: ↑railroad track, ↑railroad, ↑railway, ↑tramline, ↑tramway, ↑streetcar track

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plural of rail
present third singular of rail

Useful english dictionary. 2012.