1. (verb)know the fact of being aware of information that is known to few people "he is always in the know"
2. (verb)know, cognize, cognise be cognizant or aware of a fact or a specificpiece of information; possess knowledge or information about "I know that the President lied to the people"; "I want to know who is winning the game!"; "I know it's time"
3. (verb)know know how to do or perform something "She knows how to knit"; "Does your husband know how to cook?"
4. (verb)know be aware of the truth of something; have a belief or faith in something; regard as true beyond any doubt "I know that I left the key on the table"; "Galileo knew that the earth moves around the sun"
5. (verb)know be familiar or acquainted with a person or an object "She doesn't know this composer"; "Do you know my sister?"; "We know this movie"; "I know him under a different name"; "This flower is known as a Peruvian Lily"
6. (verb)know, experience, live have firsthand knowledge of states, situations, emotions, or sensations "I know the feeling!"; "have you ever known hunger?"; "I have lived a kind of hell when I was a drug addict"; "The holocaust survivors have lived a nightmare"; "I lived through two divorces"
7. (verb)acknowledge, recognize, recognise, know accept (someone) to be what is claimed or accept his power and authority "The Crown Prince was acknowledged as the true heir to the throne"; "We do not recognize your gods"
8. (verb)know have fixed in the mind "I know Latin"; "This student knows her irregular verbs"; "Do you know the poem well enough to recite it?"
9. (verb)sleep together, roll in the hay, love, make out, make love, sleep with, get laid, have sex, know, do it, be intimate, have intercourse, have it away, have it off, screw, fuck, jazz, eff, hump, lie with, bed, have a go at it, bang, get it on, bonk have sexual intercourse with "This student sleeps with everyone in her dorm"; "Adam knew Eve"; "Were you ever intimate with this man?"
10. (verb)know know the nature or character of "we all knew her as a big show-off"
11. (verb)know be able to distinguish, recognize as being different "The child knows right from wrong"
12. (verb)know perceive as familiar "I know this voice!"
1. (verb)know to understand or haveknowledge of sth Do you know his address?; "When's her birthday?" "I don't know"; We've known about it for two weeks.; No one knows how they managed to open the door.
2. know how should I know indicates annoyance when sb asks you sth "Where are the car keys?" "How should I know!"
3. know to be aware of what sb or sth is like We don't know him very well.; I know that road well.; I wanted to know what life in another country was like.
4. know get to know to gradually learn Getting to know everyone here has been a real pleasure.
5. know know sth like the back of your hand to know sth well He knows the city like the back of his hand.
6. know to have the skills and knowledge to do sth Do you know how to cook?
7. know to be sure about sth We knew that it was going to be a tense meeting.
8. know known as (of a person or place) called a particularname As a kid he was known as "Tricky."
9. know known for remembered because of a photographer best known for his shocking images of war
10. know I know indicates agreement or sympathy "It's way too hot in here." "I know."; I know you didn't want to do this, so thanks.
11. know indicates you have an idea I know, let's go to the zoo this afternoon.
12. know know better to be sensible enough to be aware that sth is wrong Ben's old enough to know better.
13. know to know sb is not being truthful or is not correct She said it'd take an hour to get there, but I knew better.
14. know you know emphasizes what you are saying You know you really should try to help her.
15. know used when you are considering what to say next Well, it could be, you know, difficult.
16. know you never know emphasizes you think sth could be possible I don't think they're coming but you never know.
17. (noun)know in the know having information about sth other people do not know about employees who were in the know
Definition of 'know'
Webster Dictionary
1. (noun)know knee
2. (verb)know to perceive or apprehend clearly and certainly; to understand; to have full information of; as, to know one's duty
3. (verb)know to be convinced of the truth of; to be fully assured of; as, to know things from information
4. (verb)know to be acquainted with; to be no stranger to; to be more or less familiar with the person, character, etc., of; to possess experience of; as, to know an author; to know the rules of an organization
5. (verb)know to recognize; to distinguish; to discern the character of; as, to know a person's face or figure
6. (verb)know to have sexual commerce with
7. (verb)know to have knowledge; to have a clear and certain perception; to possess wisdom, instruction, or information; -- often with of
Sense: to be aware of or to have been informed about He knows everything; I know he is at home because his car is in the drive; He knows all about it; I know of no reason why you cannot go.
Definitions of know 
Afrikaans: weet
Arabic: يَعْرِف
Bulgarian: осведомен съм
Brazilian: saber
Czech: vědět, znát
German: wissen
Danish: vide
Greek: ξέρω, γνωρίζω
Spanish: saber, conocer
Estonian: teadma
Farsi: دانستن
Finnish: tietää
French: savoir, connaître
Hebrew: לָדַעַת
Hindi: जानना
Croatian: znati
Hungarian: tud
Indonesian: tahu
Icelandic: vita
Italian: sapere
Japanese: 知っている
Korean: 알다
Lithuanian: žinoti
Latvian: zināt
Malay: tahu
Dutch: weten
Norwegian: vite
Polish: wiedzieć, znać
Persian: دانستن
Pashto: پوهيدل
Portuguese: conhecer
Romanian: aşti, a cunoaşte
Russian: знать
Slovak: vedieť
Slovenian: vedeti
Serbian: znati
Swedish: veta, känna till
Thai: รู้
Turkish: bilmek
Taiwanese: 知道
Ukrainian: знати
Urdu: علم ہونا
Vietnamese: biết
Chinese: 知道
