caltrop

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English[edit]

Etymology[edit]

From the Latin calcitrapa (thistle).

Pronunciation[edit]

Caltrop used in the Vietnam war

Noun[edit]

caltrop (plural caltrops)

  1. (weaponry) A small, metal object with spikes arranged so that, when thrown onto the ground, one always faces up as a threat to passers-by.
    • 1858, The journal of the British Archaeological Association
      ...her father, the emperor Alexius, who reigned AD 1081-1118, ordered caltrops to be cast in front of his archers...
    • 1954, Joseph Needham, Ling Wang, Science and civilisation in China
      By Sung times, several different types of caltrops had been developed. As in earlier times, both caltrops could be made from both wood and iron...
    • 2000, Alan Vick, Aerospace operations in urban environments: exploring new concepts
      Caltrops, tetrahedrons, and similar devices are designed to puncture vehicle tires or limit foot traffic. The standard design has four points.
  2. (heraldry) This object used as a heraldic charge.
  3. (colloquial) The starthistle, Centaurea calcitrapa, a plant with sharp thorns.
  4. A flowering plant, Tribulus terrestris, in the family Zygophyllaceae, native to warm temperate and tropical regions of the Old World.

Synonyms[edit]

Translations[edit]

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See also[edit]