Enter a clue or pattern or both:
The Clue
Car parts that have caps (4 letter answer)
The Answer
HUBS
Tags
Notes
The answer HUBS is seen occasionally, appearing about once every 750 puzzles.
Related Clues
LAX, O'Hare and others
Centers
Cores
Meccas
Naves
Centers of activity
Centers of wheels
Central sections
Focal points
Major airports
Primary intersections
Parts of cars with caps
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"