métro

In a sentence

• Je prends le métro pour aller au travail chaque matin.

  I take the metro to go to work every morning.

  In this sentence, 'métro' refers to the subway system used for commuting.

• Le métro de Paris est l'un des plus anciens du monde.

  The Paris metro is one of the oldest in the world.

  Here, 'métro' is used to describe the public transportation system specific to a city, in this case, Paris.

• Elle a perdu son métro lorsqu'il a fallu le réparer.

  She lost her metro pass when it needed repair.

  In this example, 'métro' can better be interpreted as shorthand for a metro pass or card, showing how in informal conversation, objects can sometimes adopt the names of their associated systems.