bridle

Short definition from Wiktionary

Noun

1. 1
   The headgear with which a horse is directed and which carries a bit and reins.
2. 2
   A restraint; a curb; a check.
3. 3
   A length of line or cable attached to two parts of something to spread the force of a pull, as the rigging on a kite for attaching line.
4. 4
   A mooring hawser.
5. 5
   A piece in the interior of a gunlock which holds in place the tumbler, sear, etc.
6. 6
   A gesture expressing pride or vanity.

Verb

1. 1
   To put a bridle on.
2. 2
   To check, restrain, or control with, or as if with, a bridle; as in bridle your tongue.
3. 3
   To show hostility or resentment.
4. 4
   To hold up one's head proudly or affectedly.