Wiktionary
clackety
interj. A clacking sound suggesting mechanical motion, as of a railway train.
Usage examples of "clackety".
Dieter replied, and that evening he was on his way out of Russia, rejoicing with every clackety turn of the train wheels.
There was another door on the far side of the room, and we walked toward it, my high heels making clackety echoes in the huge room.
Kilmartin sat on the edge of his desk, wondering if the clackety clack of the typewriters would now add a headache to his woes.