- the central portion of a wheel, propeller, fan, etc, through which the axle passes
- the focal point
- a device for connecting computers in a network
WordReference Random House Learner's Dictionary of American English © 2019
- Mechanical Engineeringthe central part of a wheel, fan, propeller, etc.
- a focus of activity or authority;
core:The city was the manufacturing hub.
- Mechanical Engineeringthe central part of a wheel, as that part into which the spokes are inserted.
- Mechanical Engineeringthe central part or axle end from which blades or spokelike parts radiate on various devices, as on a fan or propeller.
- Economicsa center around which other things revolve or from which they radiate;
a focus of activity, authority, commerce, transportation, etc.:Chicago is a railroad hub.
- the Hub, Boston, Mass. (used as a nickname).
- the peg or hob used as a target in quoits and similar games.
- Electricityany one of the holes in an electrical panel, into which connections may be plugged.
- Currency[Coining.]a design of hardened steel in relief, used as a punch in making a die.
- Surveyinga stake bearing a tack used to mark a theodolite position.
- Metallurgya die forced into a metal blank.
- Metallurgyto stamp (a metal blank) with a hub.
- perh. variant of hob1 1505–15
- 3.See corresponding entry in Unabridged core, pivot, heart.