(guāng, ㄍㄨㄤ) light; ray; bright; only; merely; to use up [CE-DICT]
束
(そく) (n,n-suf) (1) {math} lattice; (n,n-suf,ctr) (2) 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) [EDICT]
(つか) (n) (1) strut; short vertical post; (2) thickness (of a book minus the cover, a sheaf of paper, etc.); (3) (arch) (See 束・そく) handbreadth; bundle [EDICT]