a device that scans automatically for some signal or condition
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"
a radar dish that rotates or oscillates in order to scan a broad area
an electronic device that generates a digital representation of an image for data input to a computer
someone who scans verse to determine the number and prosodic value of the syllables
a radio receiver that moves automatically across some selected range of frequencies looking for some signal or condition