cal.trop

caltrop的音标和读音：
DJ音标发音： [ˈkæltrəp, ˈkɔ:l-]
KK音标发音： [ˈkæltrəp, ˈkɔl-]

caltrop的词性：
n.（名词）

1. Any of various plants of the genera Tribulus and Kallstroemia, having spiny or tuberculate fruits.
美洲蒺藜：任一种蒺藜 属和 Kallstroemia 属植物，长有纺锤形或瘤状的果实

2. A Mediterranean species of star thistle (Centaurea calcitrapa) naturalized in North America.
矢车菊：星蓟的一个地中海种（星苞矢车菊 矢车菊属） ，原长于北美洲

3. See water chestnut
参见 water chestnut

4. A metal device with four projecting spikes so arranged that when three of the spikes are on the ground, the fourth points upward, used as a hazard to pneumatic tires or to the hooves of horses.
铁蒺藜：一种金属装置，有四只突出的脚钉，三只立于地上，第四只指向上方，用作气动轮胎的闸或马蹄

caltrop的词源：

5. Middle English calketrappe
中古英语 calketrappe

6. from Norman French
源自 诺曼法语

7. and from Old English calcatrippe [thistle]
并源自 古英语 calcatrippe [蓟]

8. both from Medieval Latin calcatrippa [thistle]
都源自 中世纪拉丁语 calcatrippa [杂草]

9. possibly from Latin calc3re [to tread on] * see calque
可能源自 拉丁语 calc3re [践踏] *参见 calque

10. trappa [trap] [of Germanic origin]
trappa [陷阱] [起源于日耳曼语]