definition of
impression

[1] #1 impression n. [feeling, belief, notion, opinion] a vague idea in which some confidence is placed; "his impression of her was favorable"; "what are your feelings about the crisis?"; "it strengthened my belief in his sincerity"; "I had a feeling that she was lying". wn

[2] #2 impression n. [effect] an outward appearance; "he made a good impression"; "I wanted to create an impression of success"; "she retained that bold effect in her reproductions of the original painting". wn

[3] #3 impression n. [mental picture, picture] a clear and telling mental image; "he described his mental picture of his assailant"; "he had no clear picture of himself or his world"; "the events left a permanent impression in his mind". wn

[4] #4 impression n. [depression, imprint] a concavity in a surface produced by pressing; "he left the impression of his fingers in the soft mud". wn

[5] #5 impression n. [stamp] a symbol that is the result of printing or engraving; "he put his stamp on the envelope". wn