It looks like you’re asking about a car hood , which is called the hood in American English and the bonnet in Commonwealth English. It’s the hinged cover over the front of a vehicle that opens to access the engine compartment.

Common term

  • Hood : American English.
  • Bonnet : Commonwealth English.

If you meant a different hood

  • A lens hood is the square or round attachment on a camera lens that blocks stray light.
  • A hood as headgear is a covering for the head and neck.

If you want, I can also identify the hood from a photo or describe the exact style name.