The indentation or depression made by the pressure of one object on or into another.
His head made an impression on the pillow.
The overall effect of something, e.g., on a person.
He tried to make a good impression on his parents.
A vague recalling of an event, a belief.
I have the impression that he's already left for Paris.
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.
From Old French impression, from Latin impressio. Equivalent to impress + -ion.
Select a language to see translations