Source : Webster's Revised Unabridged Dictionary (1913)

Manumit \Man`u*mit"\, v. t. [imp. & p. p. {Manumitted}; p. pr. &
   vb. n. {Manumitting}.] [L. manumittere, manumissum; manus the
   hand + mittere to send, to send off. See {Manual}, and
   {Missile}.]
   To release from slavery; to liberate from personal bondage or
   servitude; to free, as a slave. ``Manumitted slaves.''
   --Hume.

Source : WordNet®

manumit
     v : free from slavery or servitude [syn: {emancipate}]
     [also: {manumitting}, {manumitted}]