Definition of pixie cup in English:

pixie cup

noun

  • 1US a white-flowered bulbous plant, Nothoscordum bivalve (family Amaryllidaceae), of the south-eastern United States (rare).

  • 2Any of several lichens of the genus Cladonia, having cup or goblet-shaped fruiting bodies, especially the widespread C. pyxidata; also in plural.

Origin

Early 20th century; earliest use found in Transactions of the Kansas Academy of Science.