knock-down
adjective [ only before noun ]
informal ( US also knockdown) ukusextremely cheap or much lower than the usual amount:
a knock-down deal/price/rate
They are offering a full broadband internet service for a knock-down £17.99 a month.
very serious and damaging:
a knockdown battle/blow The company has had a knock-down blow.
COMMERCE US
used to describe furniture that is sold in pieces that must be joined together:
a knockdown bookcase/desk/table
Compare
self-assembly adjective