Source : Webster's Revised Unabridged Dictionary (1913)

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.]