from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See measuring worm.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The larva of a moth of the family Geometridae.
from the GNU version of the Collaborative International Dictionary of English
- n. The larva of any geometrid moth. It progresses forward by first bringing the rear end of the body forward, forming a loop, then moving the front part of the body; called also measuring worm, measuringworm, spanner, and looper. See geometrid.
from The Century Dictionary and Cyclopedia
- n. A dropworm or measuring-worm. See looper.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. small hairless caterpillar having legs on only its front and rear segments; mostly larvae of moths of the family Geometridae
From inch + worm. (Wiktionary)