impression

(noun): The indentation or depression made by the pressure of one object on or into another.
(noun): The overall effect of something, e.g., on a person.
(noun): A vague recalling of an event, a belief.
(noun): An impersonation, an imitation of the mannerisms of another individual.
(noun): An outward appearance.
(noun): An online advertising performance metric representing an instance where an ad is shown once.
(noun): The first coat of colour, such as the priming in house-painting etc.
(noun): (engraving) A print on paper from a wood block, metal plate, etc.
(noun): The vivid perception of something as it is experienced, in contrast to ideas or thoughts drawn from memory or the imagination.
(verb): To manipulate a blank key within a lock so as to mark it with impressions of the shape of the lock, which facilitates creation of a duplicate key.