subway

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun an electric railway operating below the surface of the ground (usually in a city)
  2. noun an underground tunnel or passage enabling pedestrians to cross a road or railway

Etymology

From sub- + way.

In classic literature

Synonyms

metro, tube, underground, subway system

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