From Longman Dictionary of Contemporary Englishsilkwormsilk‧worm /ˈsɪlkwɜːm $ -wɜːrm/ noun [countable] HBIa type of caterpillar which produces silk thread
Examples from the Corpus
silkworm• In one, a woman harvests silkworms from mulberry leaves in preparation for processing at a nearby mill.• King James offered financial rewards to persuade people to plant mulberries to feed his imported silkworms.• And the lady dressed by the silkworm was probably oblivious to everything. 