ROGET THESAURUS
whirr
Roll
N
roll, drumming, berloque, bombination, rumbling, tattoo, drumroll, dingdong, tantara, rataplan,
whirr, ratatat, ratatat-tat, rubadub, pitapat, quaver, clutter, charivari, racket, cuckoo, repetition, peal of bells, devil's tattoo, reverberation, clickety-clack, hum, purr, hummingbird, cat, kitten (animal sounds), rolling, monotonous, like a bee in a bottle.