Colchicine

[Sarah]

A powerful vegetable alkaloid, C17H19NO5, extracted from theColchicum autumnale, or meadow saffron, as a white or yellowishamorphous powder, with a harsh, bitter taste; -- called alsocolchicia.

[Mark Zuckerberg]

a drug used in the treatment of gout (= a painful disease that makes the joints swell)

[Little_Girl]

A yellow compound present in the corms of colchicums, used to relieve pain in cases of gout.