Source : Webster's Revised Unabridged Dictionary (1913)

Lata \La"ta\, Latah \La"tah\, n. [Malay.]
   A convulsive tic or hysteric neurosis prevalent among Malays,
   similar to or identical with miryachit and jumping disease,
   the person affected performing various involuntary actions
   and making rapid inarticulate ejaculations in imitation of
   the actions and words of another person.