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1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Monotropa \Mo*not"ro*pa\, n. [NL., fr. Gr. mo`nos single + ?
      turn, from ? to turn.] (Bot.)
      A genus of parasitic or saprophytic plants including the
      Indian pipe and pine sap. The name alludes to the dropping
      end of the stem.
      [1913 Webster]