Etymologically

Etymology and origin of the French word verrou

Confidence
Established
Formation
Inherited
First attested
c. 1120 Cambridge Psalter More words from the 12th century
Inherited from
Latin *verruculum via Old French
Ultimate origin
Latin verū

Pronunciation

Forms

verrou m (plural verrous)[1] Old French veruil, veroil, Middle French verroul and verrouil;[2][3][4] verrou is found from 1387.[2][3][4]

Etymology

It is inherited from Old French veroil, inherited from Vulgar Latin *verruculum, an alteration of Latin veruculum (“small spit, small pike”), a diminutive of verū (“spit, dart”).[3][5][4] The doubled ⟨rr⟩ comes from the influence of ferrum (“iron”), and the final -ou from the plural, as in genou and pou.[3][6][7] Bloch and Wartburg note that the cross with the word for iron happened again in Old Spanish and in Gallo-Romance dialects.[6][3]

Cognate with Old Occitan verrolh, Portuguese ferrolho and Spanish cerrojo, the last reshaped after cerrar.[8][6][9]

Earliest recorded meaning

Veruil is first found about 1120 in the Cambridge Psalter;[2][10] the TLFi's first record is veroil in the 13th-century fabliau Estourmi, for an iron bolt pushed into a catch to keep a door or window shut.[3]

Semantic evolution

The word has always named a sliding bolt that fastens a door.[4] In Middle French it was also used, in the Latin sense, for a long-handled cutting weapon (1479), a Latinism that did not last.[4] The 18th century brought verrou de sûreté (about 1780) and tenir sous le verrou “to keep locked up” (1762), which became sous les verrous “in prison” (1823).[4][3]

From the 19th century it named locking devices in machinery: in rolling mills (1842), on railways (1887) and in firearms (1889); in geology it is a rock bar across a glacial valley (1919).[3][10]

Timeline

  • c. 1120 – Veruil appears in the Cambridge Psalter.[2][10]
  • 13th century – Veroil is found in the fabliau Estourmi.[3]
  • 1367 – Verroul is recorded.[3][4]
  • 1387 – Verrou appears in an inventory of the dukes of Burgundy.[3][4]
  • 1479 – It is used for a long-handled weapon.[4]
  • 1636 – Monet gives the spelling verrou.[2][7]
  • 1762 – The Académie records tenir sous le verrou.[3][4]
  • c. 1780 – Verrou de sûreté is recorded.[3][4]
  • 1823 – Boiste records sous les verrous “in prison”.[3][4]
  • 1919 – It is used in geology for a rock bar across a valley.[3]

Meanings

Noun

  1. A bolt on a door or window, a metal bar that slides into a catch.[10][3]
  2. Sous les verrous: in prison.[10][3]
  3. (technical) A locking device, as on railway points or the breech of a gun.[10][3]
  4. (geology) A rock bar closing a glacial valley.[10][3]
  5. (military, figurative) A defensive barrier, an obstacle meant to stop an action.[10]
  6. (computing) A lock, mutex.[1]

Word family

  • verrouiller

Usage notes

Littré notes that in the 17th century Chifflet wrote verrouil but pronounced it verrou.[9]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  3. ^ a b c d e f g h i j k l m n o p q r s Trésor de la langue française informatisé (2004), ATILF – CNRS & Université de Lorraine, atilf.fr/tlfi; electronic version of Imbs, Paul; Quemada, Bernard, eds. (1971–1994), Trésor de la langue française, Paris: CNRS / Gallimard
  4. ^ a b c d e f g h i j k l Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  5. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 14, 283b
  6. ^ a b c Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  7. ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  8. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  9. ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  10. ^ a b c d e f g h Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Verrou.” Etymologically, 14 Nov. 2026, etymologically.com/fr/verrou. Accessed 15 Nov. 2026.

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