Brazilin \Braz"i*lin\, n. [Cf. F. br['e]siline. See {Brazil}.]
(Chem.)
A substance contained in both Brazil wood and Sapan wood,
from which it is extracted as a yellow crystalline substance
which is white when pure. It is colored intensely red by
alkalies. [Written also {brezilin}.]
[1913 Webster]