caltrop

名词 n.
中文释义
英 /ˈkaltɹəp/|/ˈkɔːltɹəp/    美 /ˈkæltɹəp/

英文释义

名词 n.
  1. A metal object, usually small, with spikes arranged so that, when thrown onto the ground, one always faces up as a threat to pedestrians, horses, and vehicles (also used as a heraldic charge).
    — […] her father, the emperor Alexius, who reigned AD 1081-1118, ordered caltrops to be cast in front of his archers […]
  2. The starthistle, Centaurea calcitrapa, a plant with sharp thorns. colloquial
  3. Any of a number of flowering plants in the family Zygophyllaceae, including several members of the genus Kallstroemia and the species Tribulus terrestris, native to warm temperate and tropical regions.

词形变化

caltrops plural

词汇关系

衍生词
water caltrop

词源

From Middle English calketrappe, from Old English calcatrippe, from Medieval Latin calcatrippa (“thistle”), from Latin calx or calcare (“to tread”) + trappa (“trap”).
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