from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The act or an instance of knocking down.
  • n. The condition of being knocked down.
  • n. An overwhelming blow or shock.
  • n. Something designed to be easily assembled or disassembled.
  • adj. Strong enough to knock down or overwhelm; powerful: a knockdown blow.
  • adj. Designed to be easily assembled or disassembled: knockdown furniture.
  • adj. Reduced: knockdown prices.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An act of knocking down or the condition of being knocked down.
  • n. An overwhelming blow.
  • n. A genetically modified organism that carries one or more genes in its chromosomes that has been made less active or had its expression reduced.
  • n. 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.
  • n. The condition of a sailboat being pushed abruptly to horizontal, with the mast parallel to the water surface.
  • n. a short pass played downwards, for example from the head onto someone's feet.
  • adj. powerful enough to overwhelm or knock down
  • adj. reduced in price

from the GNU version of the Collaborative International Dictionary of English

  • adj. Of force sufficient to fell or completely overthrow.
  • adj. Designating a rivet end to be formed into a head by upsetting in fastening.
  • adj. Of or pertaining to the act of knocking down at an auction; specif., designating the price below which an article will not be disposed by the auctioneer.
  • adj. Made or constructed so as to be capable of being knocked down or taken apart, as for transportation.
  • n. To strike down; to fell; to prostrate by a blow or by blows.
  • n. To assign to a bidder at an auction, by a blow or knock of the auctioneer's hammer; to sell at an auction.
  • n. To take apart; to dissassemble.
  • n. To reduce or discount the price of.
  • n. To earn (an income).
  • n. That which knocks one down; something that overpowers or overwhelms, as strong liquor; specif., a kind of ale or beer that is very strong.
  • n. A knocking down; a felling by a knock, as of a combatant, or of an animal; a blow that overwhelms; also, a fist fight.
  • n. Something that knocks down, or takes apart, for packing or removal, as a piece of furniture; also, state of being knocked down, or taken apart.

from The Century Dictionary and Cyclopedia

  • Such as to knock to the ground; hence, overwhelming; irresistible: as, a knock-down blow; a knock-down argument.
  • Constructed so as to be readily knocked down or taken apart for convenience in transportation; prepared and kept in separate parts, ready to be put together as a whole.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. strong enough to knock down or overwhelm
  • adj. (furniture) easily assembled and dismantled
  • n. a blow that knocks the opponent off his feet
  • v. knock down with force
  • v. cause to come or go down
  • v. shatter as if by explosion


from Wiktionary, Creative Commons Attribution/Share-Alike License

knock +‎ down


  • Hey Clay-You believe in "knockdown" power of a bullet?


  • He led the team in knockdown blocks as a junior and senior.

  • His outstanding blocking skills for the Mavericks 'ground game saw him rank among the team leaders in knockdown blocks every season ...

  • Figure 1: Short-term knockdown of DISC1 elicits spine enlargement in rat primary cortical neurons.

    Naturejobs - All Jobs

  • (a) Spine changes in mature neurons by short-term knockdown (2 d) of DISC1 using two independent RNAi.

    Naturejobs - All Jobs

  • Since completing the factory in 2002, Pyeonghwa has imported partially built cars, in a form called knockdown kits, from manufacturers such as Italy's Fiat SpA and China's Brilliance Automotive Holdings Ltd.

    Pyeonghwa Sells in North Korea

  • A knockdown is a knockdown, no matter what you say.

    Marquez Needs to Accept Defeat

  • The guy was defenseless by then, and the knockdown was a mercy.

    Becoming Holyfield

  • I confess, "he added laughing," I was a little apprehensive at one time that I should undergo what I believe you used to call a knockdown in the nineteenth century, if I did not act rather promptly.

    Looking Backward, 2000 to 1887

  • He was strong in the eighth and ninth and even scored a knockdown, that wasn't called a knockdown in the 10th.

    The Orange County Register - News Headlines : News


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