| 1. | a boxer; pugilist. |
| 2. | Military. an aircraft designed to seek out and destroy enemy aircraft in the air and to protect bomber aircraft. |
| 3. | a person who fights, struggles, resists, etc. |
| 4. | a person with the will, courage, determination, ability, or disposition to fight, struggle, resist, etc. |
| 5. | an animal, as a dog, trained to fight or having the disposition to fight. |