Derja translation of 'فَنْفِنْ'

1.

to hum, make sound of an engine

He sat there humming the motor. قْعَدْ يْفَنْفِنْ بِالمُوتُورْ

2.

to work actively, hard

Look at that man; when he works, he works hard; God bless him. شوف ها الراجل كي يخدم يفنفن تبارك الله عليه