A block of wood with holes drilled through it; strands of rope are threaded through holes when making a rope; the block of wood keeps the strands twisting tightly and evenly.
-en (TH)os-osen/ os-osa/ iyos-os,
meN-mengos-os/ man-os-os-os/ engos-os,
me-maos-os/ emangkaos-os/ aos-os
To use an os-os on something.
Towan boyaiy dalakkin man-os-os-os na pakod.
He is watching the men using the os-os block on the rope.