Used attributively of self-assembly furniture(noun)
A surface-mounted circuit board with leads attached in the plane of the board(noun)
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Use "flatpack" in a sentence
"By the exploded diagram, it looks as though this could possibly be shipped in flatpack-ish form to dealers who have an assembly facility on-site."
"We drove out of town to pick up flatpack kits and we ferried people to and from the station or the airport."
"I can rewire a plug, and hang pictures, and I can put up flatpack furniture better than anyone else I know (probably due to my unusually good spatial awareness)."