English: (noun) joint (fingers, arms legs, or bamboo; node; knot in a tree;
Bahasa Malaysia: buku jari; buku pada batang tempat daun tumbuh
Source: Peter Martin's Kelabit Dictionary
bukuh 1: book
nebukuh (ng-se-bukuh): tie a knot
sebukuh: knot in a string; string with knots for keeping track of time