
1) Dressage terminology
Found on
https://www.crosswordclues.com/clue/half-pass

The half-pass is a lateral movement seen in dressage, in which the horse moves forward and sideways at the same time. Unlike the easier leg-yield, the horse is bent in the direction of travel, slightly around the rider`s inside leg. The outside hind and forelegs should cross over the inside legs, with the horse`s body parallel to the arena wall .....
Found on
http://en.wikipedia.org/wiki/Half-pass

Variation of travers, executed on the diagonal instead of along the wall The horse should be nearly parallel to the long sides of the arena, with the forehand slightly in advance of the haunches
Found on
http://www.gaitedhorses.net/Articles/HorseGlossary.html

Dressage movement performed on two tracks in which the horse moves sideways and forwards at the same time.
Found on
https://www.encyclo.co.uk/local/22478

The horse bends slightly around the rider's inside leg with the forehand moving slightly in advance of the hind quarters as the horse travels across the diagonal. The outside legs pass in front of the inside legs and the horse is looking in the direction in which he is traveling. The horse should maintain his elasticity, cadence and impulsion throu...
Found on
https://www.encyclo.co.uk/local/22480

The horse moves forward and sideways at the same time, flexed in the direction of travel. It is simply quarters in (travers) ridden across a diagonal.
Found on
https://www.encyclo.co.uk/local/22678
No exact match found.