It's the plural form of "un feu," which means "a fire."
Here are some examples of how it's used:
* "Il y a des feux dans la forêt." (There are fires in the forest.)
* "Les pompiers ont éteint les feux." (The firefighters extinguished the fires.)
* "Il y a des feux d'artifice ce soir." (There are fireworks tonight.)