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ailanthus silkworm

American

noun

a green silkworm, Samia walkeri, introduced into the U.S. from China, that feeds on the leaves of the ailanthus.

Etymology

Origin of ailanthus silkworm

First recorded in 1865–70

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.