Enter a clue or pattern or both:
The Clue
Activity center (3 letter answer)
The Answer
HUB
Tags
Notes
The answer HUB is common and appears about once every 300 puzzles.
Related Clues
Boston
Boston, with "the"
The ___ (Boston)
Center
Core
Focus
Pivot
Airline locale
Atlanta, for Delta
Big airport
Boston's nickname, with "the"
Busy airport
Center of activity
Center of interest
Center piece
Focal point
Important airport
Meeting place
Spokes' intersection
Turning point
Wheel part
Wheel's center
Airline's home base
Many a layover locale
O'Hare or Newark Liberty
Where spokes meet
Boston, for O. W. Holmes
Center of a Trivial Pursuit board
Trivial Pursuit board location
Indirect flight stop-off
Boston Statehouse, to O. W. Holmes
Definition
HUB as a noun:
1. the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes
2. a center of activity or interest or commerce or transportation; a focal point around which events revolve; "the playground is the hub of parental supervision"; "the airport is the economic hub of the area"