A "pill gun" is a tool used to give pills to animals. It is a small device that holds the pill and helps you place it in the animal's mouth easily and safely. Full definition
If your cat is difficult to give a pill to we can show you how to use a pill gun which may simplify giving your cat a pill. (foresthillscathospital.com)
For cats, a pill gun is a handy device you can use to prevent yourself from getting bitten. (bestfriends.org)
The pill gun used in the video is also a favorite among many vet practices. (preventivevet.com)