spanworm
nounUK /ˈspænwɜːm/
US /ˈspænwɜːrm/
A spanworm is a small caterpillar that moves by looping its body up and then stretching forward.
The spanworm inched along the branch, looping its body with each step.
RELATED WORDS
OTHER MEANINGS
2. The larva of any of various geometrid moths, known for its looping gait.
Gardeners often spot a spanworm clinging to the underside of a leaf.
3. Any of several moth larvae that damage trees by feeding on foliage.
The spanworm stripped the young oak of its leaves.
4. A caterpillar that appears to measure the ground as it crawls.
Children watched the spanworm 'measure' the twig as it moved.