spanworm
/ˈspænwɜrm/
noun
- A caterpillar that moves by arching its body into a loop, also called an inchworm or looper.
- A spanworm inched its way across the leaf in the garden.
- Spanworms are often found on trees and can damage leaves if there are many of them.
- The children watched the spanworm stretch and curl as it moved along the branch.