The Collaborative International Dictionary of English v.0.48:

Jugulate \Ju"gu*late\, v. t. [imp. & p. p. Jugulated; p. pr. &
   vb. n. Jugulating.] [L. jugulatus, p. p. of jugulare, fr.
   jugulatum. See Jugular.]
   To cut the throat of. [R.] --Jacob Bigelow.
   [1913 Webster]