impression (Noun) — A vague idea in which some confidence is placed. ex. "his impression of her was favourable"
impression (Noun) — An outward appearance. ex. "he made a good impression" ex. "I wanted to create an impression of success"
impression (Noun) — A clear and telling mental image. ex. "the events left a permanent impression in his mind"
impression (Noun) — A concavity in a surface produced by pressing. ex. "he left the impression of his fingers in the soft mud"
impression (Noun) — A symbol that is the result of printing or engraving. ex. "he put his impression on the envelope"
impression (Noun) — (printing) all the copies of a work printed at one time. ex. "they ran off an initial impression of 2000 copies"
impression (Noun) — (dentistry) an imprint of the teeth and gums in wax or plaster. ex. "the dentist took an impression for use in preparing an inlay"
impression (Noun) — An impressionistic portrayal of a person. ex. "he did a funny impression of a politician"
impression (Noun) — The act of pressing one thing on or into the surface of another. ex. "he watched the impression of the seal on the hot wax"