whirring

the whirring of the fan filled the room with a soothing sound.

as the machine started, i could hear the whirring of its gears.

the whirring of the drone echoed in the clear sky.

she listened to the whirring sound of the sewing machine.

the whirring of the blender signaled that the smoothie was ready.

in the quiet library, the whirring of the copier was distracting.

the whirring sound of the helicopter made everyone look up.

he enjoyed the whirring of the cicadas on a summer evening.

the whirring of the electric toothbrush was oddly satisfying.

with a whirring sound, the printer produced the final document.