scanners

'scanners'

[scanner.n.01] as in: someone who scans verse to determine the number and prosodic value of the syllables

'scanners'

[scanner.n.02] as in: an electronic device that generates a digital representation of an image for data input to a computer

'scanners'

[scanner.n.03] as in: a radar dish that rotates or oscillates in order to scan a broad area

'scanners'

[scanner.n.04] as in: a radio receiver that moves automatically across some selected range of frequencies looking for some signal or condition

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Examples:
they used scanners to monitor police radio channels