Answer | Crossword Clue |
---|---|
HUM | Sound of an airplane motor. |
DRONE | Airplane motor sound. |
REV | Turn of an airplane motor. |
PUTPUT | Sound of an outboard motor. |
DRONE | Sound of an airplane engine. |
PURR | Sound of a motor. |
RRRRR | Sound of a motor. |
CHUG | Sound of a motor. |