The center part of a wheel, fan, or propeller.(noun)
A center of activity or interest; a focal point. See Synonyms at center.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "hub" in a sentence
"LearnVest. com, a website which she describes as a hub of personal financial information for women, including daily bite-sized newsletters, online calculators and financial checklists."
"A tactic they run with later on when the "hub" is unveiled to the guest star."
"Our local commercial hub is underdeveloped and I want more density to support it."