Definitions of hood:

• noun:   protective covering consisting of a metal part that covers the engine

  Example: "There are powerful engines under the hoods of new cars"

• noun:   a headdress that protects the head and face
• noun:   the folding roof of a carriage
• noun:   metal covering leading to a vent that exhausts smoke or fumes
• noun:   an aggressive and violent young criminal
• verb:   cover with a hood

  Example: "The bandits were hooded"

• name:  A surname (common: 1 in 4347 families; popularity rank in the U.S.: #510)