crupper /krupˈər/

1. A strap of leather fastened to the saddle and passing under the horse's tail to keep the saddle in its place
2. The hind part of a horse

• orra man
• orra men
• or rather
• orreries
• orrery
• orris
• orrises
• orris-root
• ors
• orseille
• orsellic
• or so
• ort
• ORT
• ortanique
• ortaniques
• orth-
• orthian
• orthicon
• orthicons
• ortho
• ortho-
• orthoaxes
• orthoaxis
• orthoboracic acid