| 单词 | cocoon |
| 释义 | Word Frequency cocoon(kəˈkuːn) noun 1. a. a silky protective envelope secreted by silkworms and certain other insect larvae, in which the pupae develop b. a similar covering for the eggs of the spider, earthworm, etc 2. a protective spray covering used as a seal on machinery 3. a cosy warm covering verb 4. (transitive) to wrap in a cocoon Word origin C17: from French cocon, from Provençal coucoun eggshell, from coco shell, from Latin coccum kermes berry, from Greek kokkos grain, seed, berry; compare coccus |
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