What is "glycosine"

Glycosine \Gly"co*sine\, n. (Chem.) An organic base, C6H6N4, produced artificially as a white, crystalline powder, by the action of ammonia on glyoxal.

n. 1 (context obsolete organic compound English) An organic base, C₆H₆N₄, produced by the action of ammonia on glyoxal. 2 (context organic compound English) The organic compound ''1-methyl-2-(phenylmethyl)-4(1H)-quinazolinone'' (a fused derivative of pyrimidine) found in the toothbrush plant, ''Glycosmis pentaphylla'', sometimes used to ease the pain of arthritis