What does the word hub mean?

Usage examples for hub

  1. 2417, and the other across the face of the hub of end F to see if there is any twist. – Modern Machine-Shop Practice, Volumes I and II by Joshua Rose
  2. Under the " Science" heading a great deal seemed to be going on, as usual, in connection with plasmoid experiments around the Hub. – Legacy by James H Schmitz
  3. No, he's a sneak- you're a sneak, Brooks, if you don't fill up to the hub. – Guy Rivers: A Tale of Georgia by William Gilmore Simms