copyholder [
'kɒpihәuldә]
n. 校对助手, 副本土地保有者
copyholder[ noun ]
mechanical device used in printing; holds the copy for the compositor
<noun.artifact>
Copyholder \Cop"y*hold`er\, n.
1. (Eng. Law) One possessed of land in copyhold.
2. (print.)
(a) A device for holding copy for a compositor.
(b) One who reads copy to a proof reader.