| hub | (noun) the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes | - |
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| (noun) a center of activity or interest or commerce or transportation; a focal point around which events revolve | - |
| hubbub | (noun) loud confused noise from many sources | Synonyms: brouhaha, katzenjammer, uproar |
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| hubby | (noun) a married man; a woman's partner in marriage | Synonyms: husband, married man |
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| hubcap | (noun) cap that fits over the hub of a wheel | - |
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| hubris | (noun) overbearing pride or presumption | - |
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