Etymologically

Etymology and origin of the Portuguese word flanco

Confidence
Established
Formation
Borrowing
First attested
1649 More words from the 17th century
Borrowed from
French flanc
Ultimate origin
Frankish *hlanka
Etymology tree
inherited borrowed derived
French flanc
Portuguese flanco
Spanish flanco
From the same root
French flanquer ← flanc

Pronunciation

  • Brazil: /ˈflɐ̃.ku/[1]
  • Portugal: /ˈflɐ̃.ku/[1]

Forms

flanco m (plural flancos)[1]

Etymology

It is borrowed from French flanc (“flank, side of the body”), first as a military term.[2][3][4][1] Bluteau already explained it as a term of fortification taken from the French word for the side of an animal, especially of a horse.[5]

The French word goes back to Frankish *hlanka (“hip; side of the body”).[2][6] The DHLF thinks it was remade around 1080 on the older Old French flanche.[6] The Frankish word has cognates in Old High German hlanca (“hip”), Old Saxon hlanka (“hip, thigh”) and Old Norse hlekkr (“link”), from Proto-Germanic *hlankaz (“flexible, bent”).[7][1] A root Proto-Indo-European *kleng- (“to bend”) has been proposed, though the word has no certain cognates outside Germanic.[1]

Older dictionaries derived it from Latin flaccus (“flabby”), an explanation Nascentes reports and rejects.[8][9] Gonçalves Viana held it to be a Gallicism that was Portuguese only as a term of tactics.[10] Spanish flanco was borrowed from French too, about 1700, also as a term of war, heraldry and fortification.[11]

Semantic evolution

Houaiss's first date, 1649, is for the military sense.[2] The dictionaries of the 18th century know only the fortification, the part of a bastion between its face and the curtain wall.[5][12] Vieira adds the side of a line of troops.[13] The original Caldas Aulete has the side of the human and animal body, the side of a ship, a woman's womb, and the weak or accessible point, as in dar flanco.[14] Football, geology and engineering have since taken the word for a side or slope of anything.[2][15]

Timeline

  • 1649 – Houaiss's first date, for the military sense.[2]
  • 1712–1728 – Bluteau explains flanco as a term of fortification from French flanc.[5]
  • 1789 – Morais defines only the fortification sense.[12]
  • 1813 – Cunha's date for the side of a body of troops.[3]
  • 1871 – Vieira adds the side of a line of troops to the fortification sense.[13]
  • 1899 – Figueiredo also gives the side of a ship and a weak point.[8]

Meanings

Noun

  1. The side of anything.[2][16]
  2. (anatomy) Each side of the human body between the hips and the ribs; ilharga.[2][17]
  3. The side of an animal's body: O cavalo tinha os flancos cobertos de suor.[2][15]
  4. (fortification) The part of a bastion between its face and the curtain wall.[2][16]
  5. (military) The side of an army or of a body of troops.[2][16]
  6. (football) The side of the pitch, the wing.[2][14]
  7. (geology) Each limb of a fold.[2]
  8. (nautical) The side of a ship.[15][18]
  9. A weak or accessible point.[2][16]

Usage notes

Dar flanco means to show one's weak point and so give occasion for attack or criticism, and de flanco means “from the side, sideways”.[2][17]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. flanco
  3. ^ a b Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. flanco
  4. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. flanco
  5. ^ a b c Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. flanco
  6. ^ a b Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. flanc
  7. ^ Orel, Vladimir (2003), A Handbook of Germanic Etymology, Leiden / Boston: Brill, p. 174
  8. ^ a b Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. 618
  9. ^ Nascentes, Antenor (1955), Dicionário etimológico da língua portuguesa, vol. 1: Nomes comuns, Rio de Janeiro (1st ed. 1932, preface by W. Meyer-Lübke), p. 219
  10. ^ Silva Bastos, José Timóteo da (1912), Diccionario etymologico, prosodico e orthographico da lingua portugueza, Lisboa: Parceria António Maria Pereira, p. s.v. flanco
  11. ^ Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 2, 908
  12. ^ a b Silva, António de Morais (1789), Diccionario da lingua portugueza composto pelo padre D. Rafael Bluteau, reformado, e accrescentado, 2 vols., Lisboa: Simão Thaddeo Ferreira, p. 1, 620
  13. ^ a b Vieira, Frei Domingos (1871–1874), Grande Diccionario Portuguez ou Thesouro da lingua portugueza, 5 vols., Porto: Ernesto Chardron e Bartholomeu H. de Moraes, p. 3, 705
  14. ^ a b Aulete, Francisco Júlio Caldas, Dicionário contemporâneo da língua portuguesa (1st ed. 1881), online as Aulete Digital, Rio de Janeiro: Lexikon, https://aulete.com.br, p. s.v. flanco
  15. ^ a b c Michaelis: Moderno Dicionário da Língua Portuguesa, São Paulo: Melhoramentos (online as Michaelis Dicionário Brasileiro da Língua Portuguesa, https://michaelis.uol.com.br), p. s.v. flanco
  16. ^ a b c d Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. flanco
  17. ^ a b Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 4340
  18. ^ Academia das Ciências de Lisboa, Dicionário da Língua Portuguesa, revised online edition (2023–) of the Dicionário da Língua Portuguesa Contemporânea (2001), https://dicionario.acad-ciencias.pt, p. s.v. flanco

Related etymologies

Cite this entry

“Flanco.” Etymologically, 15 Nov. 2026, etymologically.com/pt/flanco. Accessed 16 Nov. 2026.

Last edited on . ·