Word.ws English Dictionary

caltrop

/ˈkaltɹəp//ˈkæltɹəp/

caltrop noun: 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).

caltrop: a metal object, usually small, with spikes arranged so that, when thrown onto the ground, one...
Image: Jack Slimp, Jr, CC BY-SA 3.0, via Wikimedia Commons

Noun

caltrop (plural caltrops)

  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 […]1858, The journal of the British Archaeological Association
    • 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...1954, Joseph Needham, Ling Wang, Science and civilisation in China
    Synonyms:
    crow's foot, crowfoot, jackrock, cheval trap
  2. (colloquial) The starthistle, Centaurea calcitrapa, a plant with sharp thorns.
    Synonyms:
    knapweed
  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.

caltrop meaning in Tamil, Urdu, Arabic and Persian

caltrop in Tamil

Tribulus terrestris
நெருஞ்சி neruñci, நெருஞ்சில் neruñcil, கிட்டிரம் kiṭṭiram

caltrop in Urdu

سنگھاڑا

caltrop in Arabic

weaponry
حَسَك ḥasak
Tribulus terrestris
حَسَك ḥasak

caltrop in Persian

Tribulus terrestris
خارخاسک xâr-xâsak
More languagesFewer languages
caltrop in Thai
ขวาก kwàak
caltrop in Vietnamese
chông sắt

Synonyms of caltrop

All synonyms of caltrop

Forms of caltrop

pluralcaltrops

Origin of caltrop

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

Words formed from caltrop

Questions about caltrop

What does caltrop mean?
Caltrop means 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).
What is caltrop in Tamil?
Caltrop in Tamil is நெருஞ்சி (neruñci), நெருஞ்சில் (neruñcil), கிட்டிரம் (kiṭṭiram). See Caltrop meaning in Tamil.
What part of speech is caltrop?
Caltrop is a noun.
How do you pronounce caltrop?
Caltrop is pronounced /ˈkæltɹəp/ (US).
What is the plural of caltrop?
The plural of caltrop is caltrops.

Words near caltrop in the dictionary

  1. caltractin
  2. caltractins
  3. Caltrans
  4. caltrap
  5. caltraps
  6. caltrop
  7. caltrops
  8. Caluan
  9. Caluasan
  10. Calubian
  11. Calubihan

Source and license

Adapted from Wiktionary: caltrop (page history and authors); caltrop (Urdu Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Wodencafe-caltrop.wav, LL-Q1860 (eng)-Vealhurl-caltrop.wav.

Cite this entry: “caltrop.” Word.ws, https://word.ws/caltrop. Based on Wiktionary, CC BY-SA 4.0.