The Collaborative International Dictionary of English v.0.48:

Labrador \Lab`ra*dor"\, n.
   A region of British America on the Atlantic coast, north of
   Newfoundland.
   [1913 Webster]

   Labrador duck (Zool.), a sea duck (Camtolaimus
      Labradorius) allied to the eider ducks. It was formerly
      common on the coast of New England, but is now supposed to
      be extinct, no specimens having been reported since 1878.


   Labrador feldspar. See Labradorite.

   Labrador tea (Bot.), a name of two low, evergreen shrubs of
      the genus Ledum (Ledum palustre and Ledum
      latifolium), found in Northern Europe and America. They
      are used as tea in British America, and in Scandinavia as
      a substitute for hops.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Ledum palustre
    n 1: bog shrub of northern and central Europe and eastern
         Siberia to Korea and Japan [syn: wild rosemary, marsh
         tea, Ledum palustre]