Fight is a verb that means to take part in a violent struggle involving the exchange of physical blows or the use of weapons.
It can also mean:
1. To struggle to overcome, eliminate, or prevent something
2. To argue or quarrel with someone
3. In sports, to compete against an opponent
4. As a noun, it refers to the act of fighting
5. In slang, it can mean "to keep going" or "to not give up"