| 单词 | jackknife-fish |
| 释义 | jackknife-fish /jak"nuyf'fish'/, n. , pl. jackknife-fishes, (esp. collectively) jackknife-fish. Ichthyol. a black and white, American drum, Equetus lanceolatus, found in tropical areas of the Atlantic Ocean, having an elongated dorsal fin that is held erect. |
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