Geometrid

Part of speech: noun (n.)

One of numerous genera and species of moths, of the family Geometridæ; -- so called because their larvæ (called loopers, measuring worms, spanworms, and inchworms) creep in a looping manner, as if measuring. Many of the species are injurious to agriculture, as the cankerworms.

Part of speech: adjective (a.)

Pertaining or belonging to the Geometridæ.