inchworm
inch·worm
noun
1.
small hairless caterpillar having legs on only its front and rear segments; mostly larvae of moths of the family Geometridae
Origin
From inch + worm. So called because their gradual movement seems to be measuring the ground; compare measuring worm.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.