metro
UK: ˈmɛtrəʊ | US: ˈmɛtroʊ
n. 1. An underground railway system in a city.
n. 2. Short for "metropolis," referring to a large or capital city.
The word "metro" originates from the French "métro," short for "métropolitain" (metropolitan railway). The root "metr" derives from Greek "metron" (measure), reflecting the structured, measured nature of urban transit systems. The suffix "-o" is a common noun-forming ending in many languages. Over time, "metro" became a standalone term for subway systems worldwide, retaining its connection to urban infrastructure.
The Paris metro is one of the oldest underground networks in the world.
She takes the metro to work every morning to avoid traffic.
The city plans to expand its metro system by 2030.
"Metro" is often used interchangeably with "subway" in many countries.
The metro station was crowded during rush hour.