Screwworm (noun)

1. A type of fly larva (Cochliomyia hominivorax) that infests the wounds of warm-blooded animals, including livestock and humans, and feeds on the living tissue.
2. A type of fly which lays eggs in wounds, which then hatch into larvae that eat the flesh of the animal.

Origin:

It is believed to have originated from the word "screw" meaning a worm that curls into a spiral shape and "worm" meaning an insect larva.

Examples:

1. Screwworms can cause serious injury to livestock, and even death if left untreated.
2. The wound was infested with screwworms and required immediate treatment.
3. Screwworms are a common problem for farmers in tropical areas, where they can cause significant losses among livestock.
4. Screwworms can cause serious health problems in humans if left untreated.
5. The veterinarian had to remove the screwworms from the cow's wound before it could heal.