VERB + MATCHSTICK
becomes, building
ADV.
once
noun
A small, slender piece of wood or cardboard serving as a component of a match.
A piece of wood or cardboard becomes a matchstick once the end has been dipped in a sulfurous compound to turn it into a complete match.
Any similarly small and thin piece.
The explosion blew the powder shed to matchsticks.
Tom is building a matchstick house.