/ ˈskænə(r); NAmE / noun
1.
a device for examining sth or recording sth using light, sound or X-rays :
The identity cards are examined by an electronic scanner.
2.
( computing ) a device which copies pictures and documents so that they can be stored on a computer :
a document scanner
—see also flatbed scanner
3.
a machine used by doctors to produce a picture of the inside of a person's body on a computer screen :
a body scanner
4.
a piece of equipment for receiving and sending radar signals