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English to English noun
| 1 |
the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes |  | source: wordnet30
| 2 |
a center of activity or interest or commerce or transportation; a focal point around which events revolve | | Example: the playground is the hub of parental supervision
the airport is the economic hub of the area
source: wordnet30
| 3 |
The central part, usually cylindrical, of a wheel; the nave. See Illust. of Axle box. | | source: webster1913
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