'Shire horse' definitions:

Definition of 'shire horse'

From: WordNet
noun
British breed of large heavy draft horse [syn: shire, shire horse]

Definition of 'Shire horse'

From: GCIDE
  • Shire horse \Shire horse\ One of an English breed of heavy draft horses believed to be descended largely from the horses used in war in the days of heavy armor. They are the largest of the British draft breeds, and have long hair on the back of the cannons and fetlocks. Brown or bay with white on the face and legs is now the commonest color. [Webster 1913 Suppl.]