资料来源 : Webster's Revised Unabridged Dictionary (1913)

Maple \Ma"ple\, n. [AS. mapolder, mapulder, mapol; akin to Icel.
   m["o]purr; cf. OHG. mazzaltra, mazzoltra, G. massholder.]
   (Bot.)
   A tree of the genus {Acer}, including about fifty species.
   {A. saccharinum} is the rock maple, or sugar maple, from the
   sap of which sugar is made, in the United States, in great
   quantities, by evaporation; the red or swamp maple is {A.
   rubrum}; the silver maple, {A. dasycarpum}, having fruit
   wooly when young; the striped maple, {A. Pennsylvanium},
   called also {moosewood}. The common maple of Europe is {A.
   campestre}, the sycamore maple is {A. Pseudo-platanus}, and
   the Norway maple is {A. platanoides}.

   Note: Maple is much used adjectively, or as the first part of
         a compound; as, maple tree, maple leaf, etc.

   {Bird's-eye maple}, {Curled maple}, varieties of the wood of
      the rock maple, in which a beautiful lustrous grain is
      produced by the sinuous course of the fibers.

   {Maple honey}, {Maple molasses}, or {Maple sirup}, maple sap
      boiled to the consistency of molasses.

   {Maple sugar}, sugar obtained from the sap of the sugar maple
      by evaporation.

资料来源 : WordNet®

maple sugar
     n : sugar made from the sap of the sugar maple tree