Answer: hubs

AnswerCrossword Clue
HUBSImportant airports
HUBSNaves
HUBSCentral sections
HUBSPrimary intersections
HUBSCores
HUBSMeccas
HUBSParts of cars with caps
HUBSCenters of wheels
HUBSCar parts that have caps
HUBSLAX, O'Hare and others
HUBSCentral points
HUBSO'Hare and Dallas-Fort Worth
HUBSJFK et al.
HUBSFocal areas
HUBSCity centers
HUBSMajor airports, e.g.
HUBSORD and ATL, e.g.
HUBSATL and LAX, for two
HUBSNexuses
HUBSO'Hare and LAX
HUBSConnection points
HUBSWhere many connections are made
hubsHUB, the centre of a wheel
hubscenter of activity
hubsthe central part of a wheel
HUBSMajor transfer spots
HUBSFocal points
HUBSComputer centers
HUBSPlaces to make connections
HUBSCenters
HUBSCenters of activity
HUBSWheel centers
HUBSBusy airports
HUBSActivity centers
HUBSO'Hare and JFK
HUBSNerve centers
HUBSProcessing centers
HUBSMajor airports
HUBSKey airports
HUBSAirline routing centers