Answer: whirr

AnswerCrossword Clue
WHIRR

Fan sound

WHIRR

Humming sound

WHIRR

Propeller sound

WHIRR
Music to a mechanic?
WHIRR
Fan's buzz
WHIRRBuzzing sound
WHIRRBlender noise
WHIRRHum
WHIRRFan's sound
WHIRRBlender sound
WHIRRMachine sound
WHIRRBuzzing
WHIRRHelicopter sound
WHIRRAviary sound
WHIRRLasso's sound
WHIRRFan's noise
WHIRRSound from a fan
WHIRRMachinery sound
WHIRRPropeller production
WHIRRFan sound
WHIRRChopper sound