1.  scanner(n = noun.person) Array - someone who scans verse to determine the number and prosodic value of the syllables; Array
is a kind of reader, referee, reviewer
Derived form verb scan₆

2.  scanner(n = noun.artifact) digital scanner, image scanner - an electronic device that generates a digital representation of an image for data input to a computer; Array
is a kind of data input device, input device, electronic device
Derived form verb scan₅

3.  scanner(n = noun.artifact) Array - a radar dish that rotates or oscillates in order to scan a broad area; Array
is a kind of dish, dish aerial, dish antenna, saucer
Derived form verb scan₃

4.  scanner(n = noun.artifact) electronic scanner - a radio receiver that moves automatically across some selected range of frequencies looking for some signal or condition; "they used scanners to monitor police radio channels"
is a kind of detector
Derived form verb scan₃

cat scanner, computerized axial tomography scanner, digital scanner, electronic scanner, image scanner, pet scanner, positron emission tomography scanner