[prob. an attributive or elliptic use of prec.] (See quots.)
1849. D. J. Browne, Amer. Poultry Yd. (1855), 290. In 1823, he [a game-cock] was milk-white, or smock, as the English term it.
1854. Meall, Moubrays Poultry, 111. [Sub-varieties of Game-Fowl.] White, or Smock (vulgar).