A hub is the center of a wheel or the center of some kind of activity. If all of an airline's flights go through Atlanta, you'd say the southern city is their hub.
The central part, usually cylindrical, of a wheel; the nave. See Illust. of
Noun
the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes
Noun
a center of activity or interest or commerce or transportation; a focal point around which events revolve; "the playground is the hub of parental supervision"; "the airport is the economic hub of the area"
n.
The central part, usually cylindrical, of a wheel; the nave.
See Illust. of Axle box.
n.
The hilt of a weapon.
n.
A rough protuberance or projecting obstruction; as, a hub in
the road. [U.S.] See Hubby.
n.
A goal or mark at which quoits, etc., are cast.
n.
A hardened, engraved steel punch for impressing a device upon
a die, used in coining, etc.
n.
A screw hob. See Hob, 3.
n.
A block for scotching a wheel.
Hub
The central part, usually cylindrical, of a wheel; the nave. See Illust. of
Usage Examples
Poetry uses the hub of a torque converter for a jello mold.
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