impression

The indentation or depression made by the pressure of one object on or into another.countableuncountable

• His head made an impression on the pillow.

The overall effect of something, e.g., on a person.countableuncountable

• He tried to make a good impression on his parents.

A vague recalling of an event, a belief.countableuncountable

• I have the impression that he's already left for Paris.

An impersonation, an imitation of the mannerisms of another person.countableuncountable

An outward appearance.countableuncountable

A performance metric representing an instance where a post or ad is shown once.Internetcountableuncountable

• Publishers are paid for each ad impression their site generates.

The first coat of colour, such as the priming in house-painting etc.countableuncountable

A print on paper from a wood block, metal plate, etc.countableuncountable

The vivid perception of something as it is experienced, in contrast to ideas or thoughts drawn from memory or the imagination.countableuncountable

• Let us, therefore, use a little freedom, and call them Impressions; employing that word in a sense somewhat different from the usual. By the term impression, then, I mean all our more lively perceptions, when we hear, or see, or feel, or lo

set of copies of a publication printed at one time having the same content, layout, pagination, etc.countableuncountable

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.

• The trick in impressioning a key is to remove only a small amount of the blank, by filing or cutting, from the pin positions where impressions have been left.