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caltrop    
n. 攔路鉤

攔路鉤

caltrop
n 1: tropical annual procumbent poisonous subshrub having fruit
that splits into five spiny nutlets; serious pasture weed
[synonym: {caltrop}, {devil's weed}, {Tribulus terestris}]
2: a plant of the genus Trapa bearing spiny four-pronged edible
nutlike fruits [synonym: {water chestnut}, {water chestnut
plant}, {caltrop}]
3: Mediterranean annual or biennial herb having pinkish to
purple flowers surrounded by spine-tipped scales; naturalized
in America [synonym: {star-thistle}, {caltrop}, {Centauria
calcitrapa}]

Caltrop \Cal"trop\, Caltrap \Cal"trap\, n. [OE. calketrappe,
calletrappe, caltor (in both senses), fr. AS. collr[ae]ppe,
calcetreppe, sort of thistle; cf. F. chaussetrape star
thistle, trap, It. calcatreppo, calcatreppolo, star thistle.
Perh. from L. calx heel the same word as E. trap. See 1st
{Trap}.]
1. (Bot.) A genus of herbaceous plants ({Tribulus}) of the
order {Zygophylle[ae]}, having a hard several-celled
fruit, armed with stout spines, and resembling the
military instrument of the same name. The species grow in
warm countries, and are often very annoying to cattle.
[1913 Webster]

2. (Mil.) An instrument with four iron points, so disposed
that, any three of them being on the ground, the other
projects upward. They are scattered on the ground where an
enemy's cavalry are to pass, to impede their progress by
endangering the horses' feet.
[1913 Webster]

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  • Caltrop - Wikipedia
    A caltrop is a device composed of four spikes or points arranged so that in whatever manner it is thrown on the ground, it rests on three and presents the fourth upright
  • The Caltrop: A Weapon Thats Barely Changed Over 2,300 Years
    Although it was used for centuries by numerous armies, the unobtrusive-looking device called the caltrop, or calthrop, has often been overlooked by military historians, but certainly not by anyone unfortunate enough to have encountered it under field conditions
  • Medieval Weapons: Caltrops. Types of Caltrops, Facts and History
    Caltrops were medieval area-denial weapons made up of sharp spines arranged so that one of them always points upward They slowed the advance of troops
  • Caltrop (Tire Spike) - CIA
    The caltrop was “the simplest weapon we ever made,” according to Dr Stanley Lovell, the Director of the Research Development Branch of the Office of Strategic Services (OSS) Caltrops were typically placed on roadways to slow attacking troops traveling by vehicle or animal
  • Caltrops: Medieval Spiked Weapons To Halt Armies
    Caltrops were clever defensive tools made of four metal spikes arranged so that one point always faced upward They were scattered across roads and fields to injure cavalry horses, disrupt enemy formations, and slow advancing troops Cheap and effective, caltrops were a favorite in ambushes and siege defense
  • The Caltrop a Very Important Medieval Weapon
    The caltrop, a device with a history as intriguing as its simple yet effective design, is a testament to medieval warfare’s ingenuity This small, star-shaped implement, usually with four sharp spikes, was designed so that when thrown on the ground, one spike always pointed upward, ready to stop the enemy in their tracks
  • Silent Defender: How Caltrops Shaped Ancient Warfare
    Dating back over 2,300 years, the caltrop, sometimes spelled caltrap, is one of the most insidious weapons ever created Designed with four sharp spikes to ensure it had a stable base, crucially no matter how it landed one of the spikes was always pointing upwards
  • Spiked Defenses: The Tactical Use of Caltrops in Medieval Warfare
    Caltrops were an ingenious weapon that helped shape the course of history In this article, we will explore the role of medieval caltrops in warfare, their historical origins, and their lasting legacy We will also examine their offensive and defensive applications and their presence in pop culture
  • Caltrop: An Ancient Weapon in Modern Warfare
    A caltrop is an ancient device similar in appearance to a pronged jack in the children’s game of jacks Rather than prongs, caltrops feature pointed spikes intended to hinder the movement of enemy soldiers and vehicles
  • Caltrop - Simple English Wikipedia, the free encyclopedia
    A caltrop is a device composed of four spikes or points arranged so that in whatever manner it is thrown on the ground, it rests on three and presents the fourth upright





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