a framework of leather straps buckled together round the head of a horse or other draught or riding animal, including the bit and reins, used to direct and control it

a length of secured cable, esp on a boat, to which a second cable can be attached, e.g. for mooring

something that curbs or restrains

They set a bridle on his power

to put a bridle on (an animal)

to restrain or control (something)

You must learn to bridle your tongue

to show hostility or resentment in response to a perceived affront to pride or dignity, esp by drawing back the head and chin