(advertising) An online advertising performance metric representing an instance where an ad. is shown once.
(painting) The first coat of colour, such as the priming in house-painting etc.
(engraving) A print on paper from a wood block, metal plate, etc.
Esimerkit
His head made an impression on the pillow.
The stories did not seem to me to touch life. […] They left me with the impression of a well-delivered stereopticon lecture, with characters about as life-like as the shadows on the screen, and whisking on and off, at the mercy of the operator.
What is your impression of Beatles' music?
I have the impression that he's already left for Paris.