In horsemanship, a sharp jerk on a horse's bridle, used as a corrective measure.
From French 'ebrillade,' possibly related to 'ebranler' (to shake) or 'brier' (to shake/rattle). The term entered English equestrian vocabulary, referring to a specific classical dressage correction technique.
Fancy horse trainers still use this technical term to describe a precise disciplinary jerk—it's the difference between 'yanking the reins' and knowing exactly what you're doing with a horse.
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