The Collaborative International Dictionary of English v.0.48:

Palmary \Pal"ma*ry\, a. (Anat.)
   Palmar.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Palmary \Pal"ma*ry\, a. [L. palmarius, palmaris, belonging to
   palms, deserving the palm or prize, fr. palma a palm.]
   Worthy of the palm; palmy; pre["e]minent; superior;
   principal; chief; as, palmary work. --Br. Horne.
   [1913 Webster]