The most common and most likely answer to this crossword clue is the 8 letter word DRESSAGE
I've seen this crossword clue in Financial Times
D
R
E
S
S
A
G
E
More clues leading to the result DRESSAGE
- Disciplined horse moves a long time after groom
- Groom ahead of time in equestrian event
- Arrange date for an Olympic event
- Mounted training in fashion history?
- Equestrian discipline is habit coming with time
- Riding skill is habit that comes with maturity
- Groom on time as horse moves
- Fancy riding in gear some time?
- Grades trotting round double bend in equestrian event
- Arrange time for an equestrian event
Buddy explains!

The straight part
We know that "horse moves" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case horse moves = dressage.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DRESSAGE mean?
DRESSAGE noun- The schooling of a horse.
- An equestrian sport in which the horse and rider perform a test of specific movements in an arena, and are judged on the horse's obedience, acceptance of the bridle and of the rider's aids, gaits, impulsion, and the harmony between horse and rider.
- An event or competition of the sport of dressage.