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.
The Century Dictionary and Cyclopedia
n. A dropworm or measuring-worm. See looper.
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
Word Usage
"For him, every human being on the planet is an "inchworm," a "pygmy" or a "cretin," save for the couple of friends he can share his profound visions of negativity with."