knockdown

1. An act of knocking down or the condition of being knocked down.
2. An overwhelming blow.
3. Very strong ale or beer.
4. A genetically modified organism that carries one or more genes in its chromosomes that have been made less active or had their expression reduced.
5. The use of a reagent such as an oligonucleotide with sequence complementary to an active gene or its mRNA transcript, to interfere with the expression of said gene.
6. The condition of a sailboat being pushed abruptly to horizontal, with the mast parallel to the water surface.
7. A short pass played downwards, for example from the head onto someone's feet.
8. A shelter erected for use as a temporary dressing room.
9. A collection of parts required to assemble a product, typically manufactured in one region and exported elsewhere for assembly.

verb

To employ the knockdown technique

1. Powerful enough to overwhelm or knock down

   a knockdown argument

2. Reduced in price, originally to a price below which an article would not be sold by the auctioneer
3. Capable of being taken apart for packing or removal.

   knockdown furniture

4. (of a rivet head) To be formed into a head by upsetting in fastening.