Idioms

Origin of knock

before 1000; 1890–95 for def 4; Middle English knokken, knoken (v.), Old English cnocian, cnucian; cognate with Old Norse knoka to thump, knock
Related formsknock·less, adjectivere·knock, verbun·knocked, adjectiveun·knock·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for knock down (1 of 2)

knock down


verb (tr, adverb)

adjective knockdown (prenominal)

noun knockdown

US and Australian slang an introductionwill you give me a knockdown to her?

British Dictionary definitions for knock down (2 of 2)

knock

/ (nɒk) /

verb

noun

Word Origin for knock

Old English cnocian, of imitative origin; related to Old Norse knoka to hit
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Idioms and Phrases with knock down (1 of 2)

knock down


1

Take apart for storage or shipping, as in We need to knock down this chest to ship it safely overseas. [Mid-1900s]

2

Declare sold at an auction, as by striking a blow with a gavel. For example, That was the last bid, and the first edition was knocked down for only three hundred. [Mid-1700s]

3

Reduce the price of, as in They knocked it down by another hundred dollars, or An overabundant harvest will knock down corn prices. [Colloquial; mid-1800].

4

Earn as wages, as in She knocks down a hundred grand a year. [Slang; 1920s]

5

Steal, embezzle, as in He was caught knocking down the box-office receipts. This usage may be obsolescent. [Slang; mid-1800s] Also see knock over, def. 2.

Idioms and Phrases with knock down (2 of 2)

knock


In addition to the idioms beginning with knock

  • knock about
  • knock back
  • knock cold
  • knock dead
  • knock down
  • knock down with a feather
  • knock for a loop
  • knock into a cocked hat
  • knock it off
  • knock off
  • knock oneself out
  • knock on wood
  • knock out
  • knock over
  • knock over with a feather
  • knock someone's block off
  • knock someone's socks off
  • knock the bottom out of
  • knock the living daylights out of
  • knock the socks off
  • knock together
  • knock up

also see:

  • beat (knock) into someone's head
  • beat (knock) the living daylights out of
  • (knock) down to size
  • (knock) off someone's feet
  • school of hard knocks
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.