a tree; more specifically, a living tree / the bent and gnarled trunk or roots of an old tree / wood, lumber / something made of wood / in ancient China, a wooden musical instrument

to gouge

gouge / hollow out / bore / pry

a Western knife, table knife

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

sharp (of a blade etc.) / pointed, penetrating (question etc.) / sharp, perceptive

sharp

sharp; pointed; acute; keen

(literary) sharp weapon / (literary) elite; pick

(literary) keen