plural subways
1
chiefly US
: a system of underground trains in a city
I took/rode the subway to midtown.
No one on the subway seemed to mind how crowded it was.
I've been on both the New York subway and the Underground in London.
—often used before another nouna subway car/station
the subway platform
2
British
: a road or passage for walking under a road, set of railroad tracks, etc. : underpass
Cite this Entry
“Subway.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/subway. Accessed 14 Apr. 2026.
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