一骨碌

with a rolling or twisting movement / in a single movement / in one breath

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

bone

to roll rapidly / to spin / Taiwan pr. [gu2 lu5]

see 碌碡[liu4 zhou5]

(bound form used in 忙碌[mang2 lu4], 勞碌|劳碌[lao2 lu4], 庸碌[yong1 lu4] etc)

variant of 碌[liu4]