batonn.[F. bton. See Baston.]1. A staff or truncheon, used for various purposes; as, the baton of a field marshal; the baton of a conductor in musical performances.()He held the baton of command. (Prescott.)2. (Her.) An ordinary with its ends cut off, borne sinister as a mark of bastardy, and containing one fourth in breadth of the bend sinister; -- called also bastard bar. See Bend sinister.()