scanner

Noun	1.	scanner - someone who scans verse to determine the number and prosodic value of the syllables
	2.	scanner - an electronic device that generates a digital representation of an image for data input to a computer Synonyms: digital scanner, image scanner
	3.	scanner - a radar dish that rotates or oscillates in order to scan a broad area
	4.	scanner - a radio receiver that that moves automatically across some selected range of frequencies looking for for some signal or condition; "they used scanners to monitor police radio channels" Synonyms: electronic scanner

1.		scanner - An input device that takes in an optical image and digitises it into an electronic image represented as binary data. This can be used to create a computerised version of a photo or illustration. A scanner may be linked to optical character recognition software allowing printed documents to be converted to electronic text without having to type them in at a keyboard.
2.		scanner - lexical analyser.