||Dal` se"gno (?). [It., from the sign.] (Mus.) A direction to go back to the sign &?; and repeat from thence to the close. See Segno.
Dal*to"ni*an (?), n. One afflicted with color blindness.
Dal"ton*ism (?), n. Inability to perceive or distinguish certain colors, esp. red; color blindness. It has various forms and degrees. So called from the chemist Dalton, who had this infirmity. Nichol.
Dam (dm), n. [OE. dame mistress, lady; also, mother, dam. See Dame.] 1. A female parent; -- used of beasts, especially of quadrupeds; sometimes applied in contempt to a human mother.
Our sire and dam, now confined to horses, are a relic of this age (13th century) . . . .Dame is used of a hen; we now make a great difference between dame and dam.
T. L. K. Oliphant.
The dam runs lowing up and down,
Looking the way her harmless young one went.
Shak.