plate-dog

[ pleyt-dawg, -dog ]
/ ˈpleɪtˌdɔg, -ˌdɒg /

noun Printing.

a heavy metal plate on which plates, stereos, etc., are locked into position for printing on a rotary press.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019