circ - cock
- circle
- circle the aerodrome
- circle the field
- circle to land
- circle trip
- circle trip fare
- circle-to-land manoeuvre
- circled
- circling
- circling approach
- circling approach minimum
- circling guidance lights
- circling procedure
- circling the aerodrome
- circlip
- circlip pliers
- circuit
- circuit algebra
- circuit array
- circuit board
- circuit breaker
- circuit breaker panel
- circuit capacity
- circuit card
- circuit card assembly
- circuit closer
- circuit continuity
- circuit control devices
- circuit design
- circuit file
- circuit flying
- circuit network
- circuit pattern
- circuit rules
- circuit switched
- circuit switching
- circuit tester
- circuit-circling
- circuital
- circular
