The Collaborative International Dictionary of English v.0.48:

Palmer \Palm"er\, n. [From Palm the tree.]
   A wandering religious votary; especially, one who bore a
   branch of palm as a token that he had visited the Holy Land
   and its sacred places. --Chaucer.
   [1913 Webster]

         Pilgrims and palmers plighted them together. --P.
                                                  Plowman.
   [1913 Webster]

         The pilgrim had some home or dwelling place, the palmer
         had none. The pilgrim traveled to some certain,
         designed place or places, but the palmer to all. --T.
                                                  Staveley.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Palmer \Palm"er\, n. [From Palm, v. t.]
   One who palms or cheats, as at cards or dice.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Palmer
    n 1: United States golfer (born in 1929) [syn: Palmer, Arnold
         Palmer, Arnold Daniel Palmer]