Source : Webster's Revised Unabridged Dictionary (1913)

Neif \Neif\, Neife \Neife\ (n[=e]f), n. [OF. ne["i]f, na["i]f, a
   born serf, fr. L. nativus born, imparted by birth. See
   {Native}.]
   A woman born in the state of villeinage; a female serf.
   --Blackstone.

Neif \Neif\, Neaf \Neaf\ (n[=e]f), n. [Icel. hnefi; akin to Dan.
   n[ae]ve, Sw. n["a]fve.]
   The fist. [Obs.] ``I kiss thy neif.'' ``Give me your neaf.''
   --Shak.