rails

/ʁaj/rail
1.
nounmasculinePlur

metal rails or tracks (for trains, trams) and similar guiding rails (for sliding doors, curtains, etc.)

Le train a déraillé parce que les rails étaient trop usés.

The train derailed because the rails were too worn.

Synonyms:voie ferrée, glissière, guide
2.
nounmasculinePlur

lines of cocaine (colloquial)

Ils se sont tapé quelques rails pendant la soirée.

They did a few lines during the party.

Synonyms:lignes, traits