n.
Pronunciation: ' lü-p ə r
Function: noun
Date: 1731
1 : any of the usually rather small hairless caterpillars that are mostly larvae of moths (families Geometridae and Noctuidae) and move with a looping motion in which the hind prolegs draw the posterior body toward the front followed by forward extension by the anterior legs ― called also inchworm
2 : one that loops