Wa·ter chin·qua·pin Bot. The American lotus, and its edible seeds, which somewhat resemble chinquapins.   Cf. Yoncopin.
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  water chinquapin
       n 1: water lily of eastern North America having pale yellow
            blossoms and edible globular nutlike seeds [syn: American
            lotus, yanquapin, Nelumbo lutea]
       2: edible nutlike seeds of an American lotus having the flavor
          of a chinquapin