Definition of "Know" :

noun: the fact of being aware of information that is known to few people

"He is always in the know."

verb: 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."

verb: be familiar or acquainted with a person or an object

"She doesn't know this composer."

verb: 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."

verb: 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."

verb: know how to do or perform something

"She knows how to knit."

verb: have fixed in the mind

"I know Latin."

verb: have firsthand knowledge of states, situations, emotions, or sensations

"I know the feeling!."

verb: perceive as familiar

"I know this voice!."

verb: be able to distinguish, recognize as being different

"The child knows right from wrong."

verb: know the nature or character of

verb: have sexual intercourse with