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hub

hub

pronunciation:
huhb
part of speech: noun
definition 1: the rotating center part of a wheel or similar device to which other parts, such as spokes, are connected.
 
similar words:
axle, center, pivot
definition 2: a central location around which activity occurs.
The kitchen is the hub of our household.
synonyms:
center, core, pivot
similar words:
backbone, focus, heart, kernel, nucleus