timber - trees in a forest regarded as a source of wood. / material wood, (UK) timber, (US) lumber - wood that has been pre-cut and is ready for use in construction.

one shaku and one sun

in ancient China, the paperboard on which the imperial decree was written, or the imperial decree

long / (time) long, lengthy

a bamboo measure

the shaku, "metal shaku", or Japanese foot: a traditional Japanese unit of length equal to 10 sun (寸) or ¹⁄₁₀ jō (丈), standardized as ¹⁰⁄₃₃ of a meter

shaku (measurement) / measure

to grow into adulthood / to excel

strong point / (music) major / chief, head, leader

long / lengthy