1. An arched way underneath a street containing water-pipes, gas-pipes, telegraph wires, &c., so that when these require repair, the street above need not be disturbed.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• segway,
• subday,
• subwasy,
• sunway,
• safway,
• suway,
• sagway,
• saway,
• suvway,
• subaway,
• subwaay,
• subwway,
• subwy,
• subwiy,
• subwey,
• Subdwal,
• subww,
• supwar,
• subwaye,
• subways

• sub,
• subia,
• suppa,
• suva.

The adjective form of the word "subway" is "subway".

The plural of the "subway" can be the "subways".

The singular of the "subway" can be the "subway".