Meaning ofscannerin English

Noun

1. a device for scanning barcodes or QR codes; price checking
2. a radio receiver detecting signals on multiple frequencies
3. a device using radiation for diagnostic imaging
   The doctor used a scanner to examine the patient's injury.
4. an optical device reading printed data
   The store clerk used a scanner to read the barcode on the product.
5. a device converting documents to digital format
   The office purchased a scanner to digitize their old files.