Entomology. In hymenopterans: each of a set of horny movable scales which prevent the sting from being thrust out too far. Now rare.
| 单词 | θ34352 |
| 释义 | the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > stinging organ > scale preventing dislocation of darts (1) retinaculum1802 Entomology. In hymenopterans: each of a set of horny movable scales which prevent the sting from being thrust out too far. Now rare. |
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