Etymologically

Etymology and origin of the Latin word eculeus

Confidence
Established
Formation
Derivation
First attested
116–27 BC, Varro
Ultimate origin
Proto-Indo-European (*h₁eḱ-u-)
Etymology tree
inherited borrowed derived
Latin equus
Latin eculeus
Latin equile

Pronunciation

  • Classical: [ɛˈkʊ.ɫe.ʊs][1]
  • Ecclesiastical: [eˈkuː.le.us][1]

Forms

eculeus m (genitive eculeī); second declension[1] It is also spelled equuleus.[2][1]

Etymology

It is from Latin equus (“horse”) + -uleus.[2][3] De Vaan traces equus to Proto-Italic *ekwo- (“horse”) and Proto-Indo-European *h₁eḱ-u- (“horse”), comparing Sanskrit अश्व (áśva-, “horse”) and Ancient Greek ἵππος (híppos, “horse”).[4]

Earliest recorded meaning

De Vaan dates it from Varro,[4] who in his Menippean satires says that a groom will not break in a wild foal.[2]

Semantic evolution

It is a young or small horse, a foal or pony: Livy reports among prodigies that a cow gave birth to a foal, and Cicero mentions little silver horses as works of art.[2] It is also an instrument of torture, probably a kind of rack: Cicero speaks of an inquiry into the facts on the rack and of a man tortured on it, and Seneca mentions it in his letters.[2] Köbler dates it from Cicero.[3]

Timeline

  • 116–27 BC – Varro of a wild foal.[2][4][3]
  • 81–43 BC – Cicero of the rack and of silver horses.[2][3]
  • 59 BC–17 AD – Livy of a foal born to a cow.[2][3]

Meanings

Noun

  1. A young or small horse, a foal, pony.[2]
  2. An instrument of torture, probably a kind of rack.[2]

Word family

  • equiliolus

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
Cite this entry

“Eculeus.” Etymologically, 20 Oct. 2026, etymologically.com/la/eculeus. Accessed 20 Oct. 2026.

Last edited on . ·