| 单词 | rolling purchase |
| 释义 | > as lemmasrolling purchase rolling purchase n. now historical a type of crossbow which allows the bow to be bent by means of a ratchet on a small wheel turned by a windlass. ΚΠ 1869 C. Boutell tr. J. P. Lacombe Arms & Armour viii. 141 Of these cross-bows..there were three varieties, severally named—the hind's foot, the lever, and the rolling purchase [Fr. arbalète à tour]. 2003 A. Baker Knight 42 Later, aids to reloading were developed, leading to the ratchet and rolling purchase crossbows, which used elaborate levers, gears, and pulleys to draw back the string. < as lemmas |
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