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castelo

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Etymology and origin of the Portuguese word castelo

Confidence
Established
Formation
Inherited
First attested
1214 testament of Afonso II More words from the 13th century
Inherited from
Latin castellum
Ultimate origin
Latin castrum
Etymology tree
inherited borrowed derived
Latin castrum
Latin castellum
French château
Italian castello
Romanian castel
Portuguese castelo
Spanish castillo
From the same root
Latin castra ← castrum

Pronunciation

  • Brazil: /kasˈtɛ.lu/[1]
  • Rio-de-Janeiro: /kaʃˈtɛ.lu/[1]
  • Portugal: /kɐʃˈtɛ.lu/[1]
  • Northeast-Brazil: /kaʃ.ˈtɛ.lu/[1]

Forms

castelo m (plural castelos)[1] Houaiss records castelo from 1214, castello in the 13th century and casteloo in the 15th.[2]

Etymology

It is inherited from Latin castellum (“fortified settlement, fort”), written Old Galician-Portuguese castelo in the oldest texts.[2][1] The Latin word is a diminutive of castrum (“fortified place, camp”).[2][3][4]

The same Latin word is Galician castelo, Spanish castillo, Catalan castell, Occitan castel, French château and Italian castello.[5][1] The French form came back into Portuguese as the doublet chatô.[1]

De Vaan derives the Latin base word from *kastro- (“part, share”), from Proto-Indo-European *ḱs-tro-, and thinks a root *ḱes- (“to cut”) the likelier source, so that the first sense was “a part cut off”, then “fenced property” and “camp”.[6]

Earliest recorded meaning

Lorenzo's chronology and Houaiss date the word to 1214, in the testament of Afonso II: aquestes caualeiros que os castelos teen de mi “these knights who hold the castles from me”.[7][2] Houaiss dates the sense “stronghold with moat, walls and towers” to the same year.[2]

Semantic evolution

In the Crónica Troiana the word also names the raised deck at the bow or stern of a ship, and the formation of soldiers standing back to back to defend themselves.[7] Houaiss dates to 1713 the castelo carried in the religious processions of Lisbon, a turned pole topped with a little castle and decorated with flowers.[2]

Figurative senses are a heap of things and a tall, strong person;[2][4][8] castelos no ar “castles in the air” are idle dreams and a castelo de cartas “house of cards” anything that falls easily.[2][4][8] In Pernambuco and Alagoas a castelo is a young bachelors' flat for meeting women, and in Bahia a brothel; in Portugal it is the heart of a watermelon.[2][9] The word passed into Kabuverdianu as kastélu.[1]

Timeline

  • 1214 – castelos in the testament of Afonso II.[7][2]
  • 13th century – the spelling castello.[2]
  • 1350 – first record in the CTA, in the Trasladação de S. Nicolau (14th-century witness).[10]
  • 15th century – the spelling casteloo.[2]
  • 1569 – Cardoso renders it by Latin castellum and arx.[11]
  • 1713 – first record of the processional castelo of Lisbon.[2]

Meanings

Noun

  1. A castle: a fortified royal or noble residence.[2][12][1]
  2. A fortress protected by walls, towers and a moat.[2][12][4]
  3. A building in the style of a castle.[2]
  4. (nautical) A raised deck at the bow or stern of a ship: castelo de proa.[12][2]
  5. (figurative) A heap or pile of things; a tall, strong person.[2][8]
  6. (Pernambuco, Alagoas) A bachelors' flat used for amorous meetings;[2][9] (Bahia) a brothel.[2][9]
  7. (Portugal) The heart of a watermelon.[2][13]
  8. (heraldry) A charge representing a fortress.[2]
  9. A variety of red grape.[2][13]

Word family

Usage notes

A cantiga in the Universo Cantigas corpus has the line tive ũu castelo forte / e dei-o a seu don[o] “I held a strong castle and gave it to its lord”.[14] As a place name, Castelo marks the site of a castle.[1]

References

  1. ^ a b c d e f g h i j k Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r s t u v w Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. castelo
  3. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  4. ^ a b c d 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. castelo
  5. ^ Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 1, 917
  6. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  7. ^ a b c Instituto da Lingua Galega, Dicionario de dicionarios do galego medieval (DDGM), ed. Ernesto González Seoane, Santiago de Compostela: Universidade de Santiago de Compostela, https://ilg.usc.gal/ddgm, p. s.v. castelo
  8. ^ a b c Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 1874
  9. ^ a b c Navarro, Fred (2004), Dicionário do Nordeste, São Paulo: Estação Liberdade, p. s.v. castelo
  10. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. castelo
  11. ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. castelo
  12. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. castelo
  13. ^ 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. castelo
  14. ^ Universo Cantigas: Glosario da poesía medieval profana galego-portuguesa, A Coruña: Instituto da Lingua e Literatura (ILLA), Universidade da Coruña, https://www.universocantigas.gal, p. s.v. castelo

Related etymologies

Cite this entry

“Castelo.” Etymologically, 15 Nov. 2026, etymologically.com/pt/castelo. Accessed 16 Nov. 2026.

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