Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A yellow pigment in the wings of certain butterflies and moths, found also in the urine of mammals.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A yellow crystalline solid that occurs mainly in the wings of butterflies and in the urine of mammals, converted by microorganisms into folic acid.

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