What is Hood ?
Hood is (noun) 1. a loose piece of clothing to cover your head He has a blue anorak with a hood. 2. a folding roof on something, e.g. a car or pram Let’s put down the hood, it’s very hot. 3. US a metal cover for the front part of a car, covering the engine He lifted the hood to see what was wrong with the motor. (NOTE: The British term is bonnet.)
source: Easier English, Student Dictionary Upper Intermediate Level