Duc"tor (?), n. [L., fr. ducere
to lead.] 1. One who leads. [Obs.] Sir
T. Browne.
2. (Mach.) A contrivance for removing
superfluous ink or coloring matter from a roller. See Doctor,
4. Knight.
Ductor roller (Printing), the roller
which conveys or supplies ink to another roller.
Knight.