The Collaborative International Dictionary of English v.0.48:

Shanghai \Shang`hai"\, v. t. [imp. & p. p. Shanghaied; p. pr.
   & vb. n. Shanghaiing.]
   To intoxicate and ship (a person) as a sailor while in this
   condition. [Written also shanghae.] [Slang, U.S.]
   [1913 Webster]