n. See Bister. [ 1913 Webster ]

{ } n. [ F. bistre a color made of soot; of unknown origin. Cf., however, LG. biester frowning, dark, ugly. ] (Paint.) A dark brown pigment extracted from the soot of wood. [ 1913 Webster ]

adj. colored with or as if with bister.
Syn. -- bistered. [ WordNet 1.5 ]