This is a basic glossary of equestrian terms that includes both technical terminology and jargon developed over the centuries for horses and other equidae, as well as various horse-related concepts. Where noted, some terms are used only in American English (US), only in British English (UK), or are regional to a particular part of the world, such as Australia (AU).
For additional terminology, see also:
Agistment, agister
A term of art in equine conformation to describe the quality of certain skeletal structures.
Casting, cast
Easy keeper (US) or good doer (UK)
Hard keeper (US) or poor doer (UK)
Longeing (US) or lungeing (UK, Australasia, informal US)
Putting to (BI), hitching (NA)
Ridgling, rig
Silhouette or outline diagram
Stable hand (US), stable lad/lass (UK)
Stall (US), stable (UK)
Tie stall (US), stall (UK)
Trap, pony trap
Veterinarian (US), veterinary surgeon (UK), (informal) vet