DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   basal
       adj 1: especially of leaves; located at the base of a plant or
              stem; especially arising directly from the root or
              rootstock or a root-like stem; "basal placentation";
              "radical leaves" [syn: radical, basal] [ant:
              cauline]
       2: serving as or forming a base; "the painter applied a base
          coat followed by two finishing coats" [syn: basal, base]
       3: of primary importance [syn: basal, primary]