putt-putt

noun

the chugging sounds made by the engine of a motorboat, motorbike, etc.

Etymology: echoic

intransitive verb putt′·-putt′ed, putt′·-putt′ing

to make, move along, or operate with such sounds

noun

a game of miniature golf, or the course it is played on

Etymology: < Putt-Putt Golf Course, a trademark