What is the meaning of Spanworm?

(n.) The larva of any geometrid moth, as the cankeworm; a geometer; a measuring worm.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). spanworm. Retrieved September 21, 2026, from http://smartdefine.org/spanworm/definitions/2064416
ChicagoWebster's. 2011. "spanworm" http://smartdefine.org/spanworm/definitions/2064416 (accessed September 21, 2026).
HarvardWebster's 2011, spanworm, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/spanworm/definitions/2064416>.
MLAWebster's. "spanworm" 28 May 2011. Web. 21 September 2026. <http://smartdefine.org/spanworm/definitions/2064416>