English: thing used to hit; hitting; washing
Source: Peter Martin's Kelabit Dictionary
kekpupu': washing, as a habitual activity; ? able to wash clothes, able to hit
mupu' (ng-pupu'): to hit, wash clothes
pemupu' (peng-pupu'): something used to hit with, to wash with
pepu'en (pupu'en): things to be washed, to be washed