assemble, construct

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.

to use / to employ / to make use of, to apply / to spend

柄: tenon

臍の緒: umbilical cord

(anatomy) navel

a tenon, as in a mortise and tenon carpentry join / (slang) a penis

to save, to preserve

umbilical cord

Alternative spelling of 臍 (“a navel; a protrusion; a tenon in a mortise and tenon carpentry join”)