bridle

The noun refers to the physical apparatus used for equine control, evoking an image of leather straps and metal bits. It is a standard countable noun used in equestrian contexts. As a verb, the word shifts from physical restraint to psychological control. When used transitively, it describes the act of suppressing a strong emotion, similar to how a rider suppresses a horse's impulse. When used intransitively, specifically with the preposition at, it describes a physical reaction of stiffening or pulling back the head, signaling a sudden feeling of offense or indignation.