noun

• A person with red hair.
• A North American duck (Aythya americana) highly esteemed as a game bird.
• A kind of milkweed (Asclepia curassavica), with red flowers, formerly used in medicine.
• Chinese red-headed centipede (Scolopendra subspinipes mutilans)
• red-headed bunting (Emberiza bruniceps)
• red-headed titi (Callicebus regulus)
• red-headed vulture (Sarcogyps calvus)
• red-headed woodpecker (Melanerpes erythrocephalus)
• (film, television, theater) A kind of 800-watt lamp.
• A surname.
• A coastal suburb of the City of Lake Macquarie, New South Wales, Australia.