A pipe conveying water to extinguish a fire.

Any of the main wheels of a device (such as an aircraft or wheelchair) that has multiple wheels.

plural of main wheel

the principal street of a town, but not necessarily named "Main Street" (qv); there can be more than one main street in some towns.

plural of main street

plural of main pot

(poker) The pot that contains the chips bet and raised by each player, up to the same amount wagered by the player all-in with the least amount of chips. Further bets and raises form the side pot or side pots.

plural of fire main

plural of main-truck

plural of main-mast