English definition of “knowledge”
› [U, no plural] information and understanding that you have in your mind: He will easily find a job with his knowledge and skills. He has a detailed knowledge of naval history. He took the car without my knowledge (= I did not know).
to (the best of) sb's knowledge › used to say that someone thinks that something is true, but cannot be sure: To the best of my knowledge, she's never worked abroad.