Ne·lum·bo prop. n.  Bot. A genus of great water lilies.  The North American species is Nelumbo lutea, the Asiatic is the sacred lotus, Nelumbo speciosa. [Written also Nelumbium.]
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  Yon·co·pin n.  Bot. A local name in parts of the Mississippi Valley for the American lotus (Nelumbo lutea).
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  Nelumbo lutea
       n : water lily of eastern North America having pale yellow
           blossoms and edible globular nutlike seeds [syn: water
           chinquapin, American lotus, yanquapin]