n. A device for removing superfluous ink or colouring matter from a roller. See doctor.
the GNU version of the Collaborative International Dictionary of English
n. One who leads.
n. A contrivance for removing superfluous ink or coloring matter from a roller. See Doctor, 4.
The Century Dictionary and Cyclopedia
n. A leader.
n. An inking-roller on a printing-press which takes printing-ink from the ink-fountain and conducts it (whence the name) to the distributing-table and -rollers. Improperly called doctor by many pressmen.
Word Usage
"Tell the 'ductor 'bout my white mouses died, and I can't go athout sumpin to carry. ""