knocked-down

[nokt-doun]

adjective

composed of parts or units that can be disassembled: knocked-down furniture.
Informal. condensed, abridged, simplified, unadorned, etc.: a knocked-down version of a Broadway musical.

Origin of knocked-down

First recorded in 1770–80

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

A dozen of the crew put the knocked-down boats together on the beach.
Adventure
Jack London
So we're getting a pilot plant: eggs, incubator, and a knocked-down broiler battery so we can try the idea out.
The Lani People
J. F. Bone