WordNet (r) 3.0 (2006):

Acer saccharum
    n 1: maple of eastern and central North America having three-
         lobed to five-lobed leaves and hard close-grained wood much
         used for cabinet work especially the curly-grained form;
         sap is chief source of maple syrup and maple sugar; many
         subspecies [syn: sugar maple, rock maple, Acer
         saccharum]