definition of
know

[1] #1 know v. [cognize, cognise] be cognizant or aware of a fact or a specific piece 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". wn

[2] #2 know v. know how to do or perform something; "She knows how to knit"; "Does your husband know how to cook?". wn

[3] #3 know v. 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". wn

[4] #4 know v. 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". wn

[5] #5 know v. [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 d. wn