Dictionary.com
definitions

shog

[shog, shawg]Scot. and British Dialect
verb (used with object), shogged, shog·ging.
  1. to shake; jolt.
verb (used without object), shogged, shog·ging.
  1. to jog along.
noun
  1. a shake; jolt.

Origin of shog

1350–1400; Middle English shoggen (v.); perhaps akin to shock1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018