Definition of spiny-headed worm in English:
Another term for thorny-headed worm.
- Flukes, tapeworms, spiny-headed worms and roundworms are the four main types of internal parasites.
- In a species of spiny-headed worm, males use their cements on each other, trying to gum up their rivals.
- This spiny-headed worm uses the spines on its head to attach to the small intestine of a fish.