measuring worm


the larva of any geometrid moth, which progresses by bringing the rear end of the body forward and then advancing the front end.
Also, measuring worm.
Also called inchworm, looper, spanworm.

1835–45, Americanism; measuring + worm Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
measuring worm
looper, Also called: inchworm the larva of a geometrid moth: it has legs on its front and rear segments only and moves in a series of loops

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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