Definition of "Bridle" :

noun: the act of restraining power or action or limiting excess

"His common sense is a bridle to his quick temper."

noun: headgear for a horse; includes a headstall and bit and reins to give the rider or driver control

verb: respond to the reins, as of horses

verb: put a bridle on

"Bridle horses."

verb: anger or take offense

"She bridled at his suggestion to elope."