Definition of reform. transitive verb. 1a : to put or change into an improved form or conditionb : to amend or improve by change of form or removal of faults or abuses. 2 : to put an end to (an evil) by enforcing or introducing a better method or course of action. 3 : to induce or cause to abandon evil ways reform a drunkard.
The largest horse in recorded history was probably a Shire named Mammoth, who was born in 1848. He stood 21.2 hands (86 inches, 218 cm) high, and his peak weight was estimated at 1,524 kilograms (3,360 lb).
They are a tall breed, with mares standing 16 hands (64 inches, 163 cm) and over and stallions standing 17 hands (68 inches, 173 cm) and over. The breed has an enormous capacity for weight pulling, and Shires have held the world records for both largest overall horse and tallest horse at various times.