束

also 把

1. noun, suffix, counter bundle; bunch; sheaf

つか

1. noun strut; short vertical post
2. thickness (of a book minus the cover, a sheaf of paper, etc.)
3. archaic handbreadth; bundle

そく

1. noun, suffix, mathematics, chemistry lattice
2. noun, suffix, counter counter for large bundles (e.g. 10 sheafs of rice, 200 sheets of calligraphy paper, 20 whistling arrows, 100 fish)
3. handbreadth (unit for measuring the length of arrows)
4. noun, anatomy fascicle