muzzle-v; 2 Senses

Sense Number 1: Fit an animal with a device to prevent biting.

Muzzle the dog to prevent it from biting strangers.
You should really muzzle that animal.

VerbNet: butter-9.9,subjugate-42.3
FrameNet: NP
PropBank: NM
WordNet 3.0 Sense Numbers: 1

Sense Number 2: Prevent someone from speaking out by any means.

The White House muzzled the press on the issue.
She muzzled her husband with a ball gag.
The burglars muzzled the woman with duct tape.

VerbNet: subjugate-42.3
FrameNet: NP
PropBank: muzzle.01
WordNet 3.0 Sense Numbers: 2, 3