Etymology and origin of the French word boulon
- Confidence
- Established
- Formation
- Derivation
- First attested
- 1200s More words from the 12th century
- Ultimate origin
- Latin bulla
From the same root
Pronunciation
- /bu.lɔ̃/[1]
Forms
boulon m (plural boulons)[1] Old and Middle French boullon, bouillon and bullon.[2][3] Anglo-Norman bolyon.[4]
Etymology
It is formed from French boule + -on,[2][1][5][6] first meaning a small round mass.[2][5][7] Its base comes from Latin bulla (“bubble”), which took the sense “ball” in Gallo-Romance.[6] The fastening sense is a narrowing of the first one to fixing pieces with a round head;[2][7] Littré likewise explains the name by the bolt's ball-shaped head.[3] Medieval Latin had bolinus in the sense “small round mass” from 1295.[2]
Earliest recorded meaning
It is first found as boullon in the 13th century, for a small ball,[2][5][8] and in 1360 as bouillon “small round mass” in the inventory of Louis of Anjou.[2]
Semantic evolution
From 1319–1327 the word named a fixing or assembly piece with a round head.[2][7] It also named an ornamental boss: in the Anglo-Norman of 1396–1404,[4] and in a 15th-century inventory of a Bible whose boards carried cinq bullons de cuivre dorés (“five gilt copper bosses”).[3][7] The fixing sense was then extended to any piece screwed onto a rod, whatever its shape, and the link with boule was forgotten.[7] The modern bolt is a threaded rod with a head at one end and a nut at the other.[2][9]
In the 19th century it also named a round iron mould for lead pipes and a part of the weaver's loom.[2][3] In popular speech visser des boulons means working on an assembly line,[9] and the figurative resserrer les boulons, to restore control by firmer organization, is recent.[7][8]
Timeline
- 13th century – Boullon “small ball” is recorded.[2][5]
- 1295 – Medieval Latin bolinus “small round mass” appears.[2]
- 1319–1327 – First used for a fixing or assembly piece.[2][7]
- 1360 – Bouillon “small round mass” in the inventory of Louis of Anjou.[2]
- 1396–1404 – Anglo-Norman boulon “ornamental boss”.[4]
- 1425 – The verb boulonner appears, first meaning “to decorate with bosses”.[6][7]
- 1842 – The Académie's supplement records the mould and loom senses.[2]
- 1866 – Boulonnerie and boulonnier are recorded.[2]
Meanings
Noun
- A bolt: a threaded metal rod with a head, used with a nut to join pieces of wood or metal.[8][2][9]
- Boulon d'ancrage: an anchor bolt fixed in masonry.[8][2]
- (bookbinding) A nail used by bookbinders.[2][3]
- (obsolete) A round iron mould for making lead pipes, also a part of a weaver's loom.[2][3]
- (figurative) Serrer or resserrer les boulons: to take a situation firmly in hand by stricter organization.[8][7]
Word family
- boulonner
- boulonnerie
- boulonnier
- déboulonner
Related words
References
- ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k l m n o p q r s t 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
- ^ a b c d e f Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
- ^ a b c Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
- ^ a b c d Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
- ^ a b c Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
- ^ a b c d e f g h i Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
- ^ a b c d e Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
- ^ a b c Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
Cite this entry
“Boulon.” Etymologically, 14 Nov. 2026, etymologically.com/fr/boulon. Accessed 15 Nov. 2026.
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