The Collaborative International Dictionary of English v.0.48:

Palama \Pal"a*ma\ (p[a^]l"[.a]*m[.a]), n.; pl. Palam[ae]
   (p[a^]l"[.a]*m[=e]). [NL., fr. Gr. pala`mh the palm.] (Zool.)
   A membrane extending between the toes of a bird, and uniting
   them more or less closely together.
   [1913 Webster]