| 词汇 | costard | 
| 词根词缀 | 词源: late 13c., coster, perhaps from Anglo-Fr. or O.Fr. coste "rib" (from L. costa "rib"). A kind of large apple with prominent "ribs," i.e. one having a shape more like a green pepper than a plain, round apple. Also applied derisively to "the head." Common 14c.-17c. but limited to fruit-growers afterward. | 
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