Synonym: bang, beat, hammer, hit, jab, pound, punch, rap, strike. Similar words: knock out, knock off, knock down, know, on occasion, sock, dock, know about. Meaning: [nɑk /nɒk] 
n. 1. the sound of knocking (as on a door or in an engine or bearing) 2. negative criticism 3. a vigorous blow 4. a bad experience 5. the act of hitting vigorously. v. 1. deliver a sharp blow or push :"He knocked the glass clear across the room" 2. rap with the knuckles 3. knock against with force or violence 4. make light, repeated taps on a surface 5. sound like a car engine that is firing too early 6. find fault with; express criticism of; point out real or perceived flaws.
n. 1. the sound of knocking (as on a door or in an engine or bearing) 2. negative criticism 3. a vigorous blow 4. a bad experience 5. the act of hitting vigorously. v. 1. deliver a sharp blow or push :"He knocked the glass clear across the room" 2. rap with the knuckles 3. knock against with force or violence 4. make light, repeated taps on a surface 5. sound like a car engine that is firing too early 6. find fault with; express criticism of; point out real or perceived flaws. 
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(61) Would you please knock me up at 7 o'clock?
(62) They decided to knock the two rooms into one.
(63) What's that knock I can hear?
(64) Knock at the rear entrance.
(65) Hey, Mum, knock something together for us to eat.
(66) The government decided to knock out gambling.
(67) How much did that car knock you back?
(68) I've a few letters to knock off this morning.
(69) We tried our best to knock over difficulties.
(70) Don't knock him - he's doing his best.
(71) Knock on the door and see if they're home.
(72) There was an insistent knock on my door.
(73) Knock it off, kids-I'm trying to work.
(74) Knock the brushes together to clean them.
(75) He refused to knock under to any difficulty.
(76) Let's knock off for lunch.
(77) He got a nasty knock on the head.
(78) Mind you don't knock the candle over.
(79) There was a light knock at the door.
(80) He tried to knock the price down to $40.
(81) That was a good knock: 86 not out.
(82) When pressed they knock off 10 per cent.
(83) I used to knock around with him at school.
(84) On Saturdays I knock around with my friends.
(85) There was a knock on / at the door.
(86) Don't knock yourself out with hardwork.
(86) Sentencedict.com is a online sentence dictionary, on which you can find nice sentences for a large number of words.
(87) I heard a knock at the door.
(88) Run for the doctor and knock him up.
(89) They heard a knock at the front door.
(90) He wanted to knock down a bank.
More similar words: knock out, knock off, knock down, know, on occasion, sock, dock, know about, well known, well-known, shock, block, stock, hockey, rocket, cocked, acknowledge.