silkworm

noun
🔊/ˈsɪlkwɜːm/
🔊/ˈsɪlkwɜːrm/
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  1. a caterpillar (= a small creature like a worm with legs) that produces silk threadTopics Insects, worms, etc.c1
    Word OriginOld English seolcwyrm (see silk, worm).