土木

building / construction / civil engineering

Tu (ethnic group) / surname Tu

earth / dust / clay / local / indigenous / crude opium / unsophisticated / one of the eight categories of ancient musical instruments 八音[ba1 yin1]

(bound form) tree / (bound form) wood / unresponsive; numb; wooden

to carry out large scale construction

earth and wood framework (idiom); plain and undecorated body

civil engineering

one's body as wood and earth / undecorated / unvarnished (truth)