retr - roll
- retract
- retract forward
- retract rearward
- retract the flaps
- retract the undercarriage
- retractable
- retractable air brakes
- retractable antenna
- retractable bumper
- retractable engine
- retractable fins
- retractable goggles
- retractable hook
- retractable lamp
- retractable landing gear
- retractable launcher
- retractable launching box
- retractable nose stabilizer
- retractable pack
- retractable pod
- retractable probe
- retractable radome
- retractable ramp
- retractable ski
- retractable slat
- retractable stairway
- retractable tray
- retractable turret
- retractable undercarriage
- retractable vortex generator
- retractable wheel
- retractable wing
- retractable-gear aircraft
- retracted
- retracted flaps
- retracted length
- retracted position
- retracted slat
- retracting
- retracting backward
