Definify.com
Webster 1913 Edition
Inchworm
Inch′wormˊ
,Noun.
(Zool.)
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
.