The Collaborative International Dictionary of English v.0.48:

Emigrate \Em"i*grate\, v. i. [imp. & p. p. Emigrated; p. pr. &
   vb. n. Emigrating.] [L. emigratus, p. p. of emigrare to
   remove, emigrate; e out + migrare to migrate. See Migrate.]
   To remove from one country or State to another, for the
   purpose of residence; to migrate from home.
   [1913 Webster]

         Forced to emigrate in a body to America. --Macaulay.
   [1913 Webster]

         They [the Huns] were emigrating from Tartary into
         Europe in the time of the Goths.         --J. H.
                                                  Newman.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Emigrate \Em"i*grate\, a.
   Migratory; roving. [Obs.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

emigrate
    v 1: leave one's country of residence for a new one; "Many
         people had to emigrate during the Nazi period" [ant:
         immigrate]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "emigrate":
   depart, deport, exile, expatriate, flit, forsake, go from home,
   immigrate, in-migrate, intermigrate, leave, leave home,
   leave the country, migrate, move, out-migrate, quit, relocate,
   remigrate, resettle, run, swarm, take wing, transmigrate, trek