The Collaborative International Dictionary of English v.0.48:

Shog \Shog\ (sh[o^]g), n. [See Shock a striking.]
   A shock; a jog; a violent concussion or impulse. [R. or
   Scot.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shog \Shog\, v. t.
   To shake; to shock. [R. or Scot.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shog \Shog\, v. i. [Cf. W. ysgogi to wag, to stir. Cf. Jog.]
   To jog; to move on. [R. or Scot.] --Beau. & Fl.
   [1913 Webster]