gū lù lù
(onom.) rolling around; spinning
also pr. [gu1lu1lu1]; Taiwan pr. [gu2lu4lu5]
骨
gū
used in 骨碌碌[gu1 lu4 lu4]
碌
lù
(bound form used in 忙碌[mang2 lu4], 勞碌|劳碌[lao2 lu4], 庸碌[yong1 lu4] etc)