knock

verb
\ ˈnäk How to pronounce knock (audio) \
knocked; knocking; knocks

Definition of knock

 (Entry 1 of 2)

intransitive verb

1 : to strike something with a sharp blow
2 : to collide with something
3a : bustle heard them knocking around in the kitchen
b : wander knocked about Europe all summer
4a : to make a pounding noise
b : to have engine knock
5 : to find fault

transitive verb

1a(1) : to strike sharply
(2) : to drive, force, or make by or as if by so striking was knocked out of the campaign
b : to set forcibly in motion with a blow
2 : to cause to collide
3 : to find fault with always knocking those in authority
knock cold knock dead
: to move strongly especially to admiration or applause a comedian who really knocks them dead
knock for a loop
1a : overcome knocked my opponent for a loop
b : demolish knocked our idea for a loop
2 : dumbfound, amaze the news knocked them for a loop
knock one's socks off
: to overwhelm or amaze one a performance that will knock your socks off
knock on wood
used interjectionally to ward off misfortune
knock together
: to make or assemble especially hurriedly or in a makeshift way knocked together my own bookcase

knock

noun

Definition of knock (Entry 2 of 2)

1a : a sharp blow : rap, hit a loud knock on the door
b(1) : a severe misfortune or hardship
2a : a pounding noise
b : a sharp repetitive metallic noise caused by abnormal ignition in an automobile engine
3 : a harsh and often petty criticism the knock on him was that he couldn't handle the pressure

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Examples of knock in a Sentence

Verb The ball knocked him on the chin. She knocked the glass from his hand. He knocked the baseball over the fence. The ball hit him in the mouth and knocked out one of his teeth. The wind knocked him backwards. The dog knocked against the lamp. My knee accidentally knocked against the table. Skaters were knocking into each other all over the ice. I accidentally knocked my knee against the table. Noun He gave him a knock on the head. There was a loud knock at the door. She took some knocks early in her career. He likes praise but can't stand the knocks.
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Recent Examples on the Web: Noun The man who is widely expected to start in England’s midfield at Wembley on Saturday took a late knock and was seen leaving the Emirates with a bandage around his left wrist. SI.com, "Harry Winks Reveals Why Gareth Southgate Left Him Out of Nations League Squad," 3 Sep. 2019 Some estimate that the number of patients implanted with the knock-off hardware could be in the hundreds -- if not thousands. CBS News, "Men expose billion-dollar back surgery scam involving doctor kickbacks and fake hardware," 21 June 2019 More Stories Harper is a journeyman filmmaker whose screen credits include the Brit horror knock-off The Woman in Black 2 and the BBC adaptation of War & Peace (also starring Buckley). David Sims, The Atlantic, "Wild Rose Is the Best Kind of Musical Melodrama," 19 June 2019 As Kepa appeared to struggle with a knock, Sarri opted to put penalty saving specialist Willy Caballero in goal for the decisive shootout – the Argentine had saved three Liverpool spot-kicks to help City win the same trophy in 2016. SI.com, "Kepa Arrizabalaga 'Not Proud' of Refusing to Come Off Before Carabao Cup Final Shootout," 5 Sep. 2019 That possibility often comes as a knock on the door, or a Sunday afternoon call or a postcard in the mailbox. Sarah Bowman, Indianapolis Star, "Indiana's forests are in danger, and the threat: You," 12 Feb. 2018 The also let Read spare his shareholders the immediate dilution of a mega share sale at a knock-down price. Washington Post, "Vodafone’s $4.5 Billion Happy Meal for Hedge Funds," 18 Sep. 2019 The national media likes to talk about the primary as a knock-out fight between moderate and liberal Democrats. Nic Garcia, The Denver Post, "Four things I learned about the 2020 Democratic presidential primary in Iowa," 15 Aug. 2019 One popular Internet theory claims that the double-knock Netflix subscribers hear when starting up any of the service's shows is a reference to the series's dramatic season two closing shot. Isaac Feldberg, Fortune, "‘Grace and Frankie’ Is Ending. How Did It Become Netflix’s Longest-Running Show?," 5 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'knock.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of knock

Verb

before the 12th century, in the meaning defined at intransitive sense 1

Noun

14th century, in the meaning defined at sense 1a

History and Etymology for knock

Verb

Middle English knoken, from Old English cnocian; akin to Middle High German knochen to press

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More Definitions for knock

knock

verb
How to pronounce knock (audio)

English Language Learners Definition of knock

 (Entry 1 of 2)

: to hit something (such as a door) with the knuckles of your hand or with a hard object (such as a knocker) in order to get people's attention
: to hit (something or someone) in a forceful way
: to touch or hit someone or something in a way that is not planned or intended

knock

noun

English Language Learners Definition of knock (Entry 2 of 2)

: a hard, sharp hit
: the sound made by a hard hit
informal : an experience that makes you less confident or successful for a period of time : a difficult or painful experience

knock

verb
\ ˈnäk How to pronounce knock (audio) \
knocked; knocking

Kids Definition of knock

 (Entry 1 of 2)

1 : to strike in order to get someone's attention I knocked before entering.
2 : to bump against something without intending to Careful! You knocked the lamp.
3 : to make a pounding noise The car's engine began knocking.
4 : to find fault with Don't knock it till you try it.
5 : to hit forcefully He knocked the ball out of the park.
knock down
1 : to strike to the ground with or as if with a sharp blow
2 : to take apart Knock down the tent before you leave camp.
knock off
: to stop doing something Hey, I don't like that, so knock it off!
knock over
: to cause to fall

knock

noun

Kids Definition of knock (Entry 2 of 2)

1 : a pounding noise I heard a knock at the door.
2 : a sharp blow a knock on the head
3 : a difficult or painful experience You learn from life's knocks.

knock

noun
\ ˈnäk How to pronounce knock (audio) \

Medical Definition of knock

1 : a sharp blow a knock to the head
2 : a sharp pounding noise

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More from Merriam-Webster on knock

Thesaurus: All synonyms and antonyms for knock

Spanish Central: Translation of knock

Nglish: Translation of knock for Spanish Speakers

Britannica English: Translation of knock for Arabic Speakers

Comments on knock

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