Etymologically

Etymology and origin of the Portuguese word moinho

Confidence
Established
Formation
Inherited
First attested
1273 More words from the 13th century
Inherited from
Latin molinum
Ultimate origin
Proto-Indo-European *melh₂-
Etymology tree
inherited borrowed derived
Latin mola
Aromanian moarã
French meule
Italian mola
Romanian moară
Spanish muela
Latin molīnus
Latin molīnum
French moulin
Italian mulino
Portuguese moinho
Spanish molino
From the same root
Latin immolō ← mola
Latin molāris ← mola
Latin molārius ← mola
Romanian morar ← mola
Latin molīna ← molīnus
Italian mulinaro ← mulino

Pronunciation

  • Brazil: /moˈĩ.ɲu/, [moˈĩ.j̃u], /ˈmuj̃.ɲu/[1]
  • Portugal: /ˈmwi.ɲu/[1]

Forms

moinho m (plural moinhos)[1] Old Galician-Portuguese wrote moỹo, moyno, moyos and moynhos; the 14th century has moiios, mouios and moio, and the 15th muynho.[2][3] Wiktionary also lists munho.[1]

Etymology

It is inherited from Late Latin molīnum (“mill”), which Houaiss explains as short for Late Latin saxum molīnum (“grinding stone”).[2][3][1][4] García de Diego cites molinum saxum from Tertullian and molinae from Ammianus.[5] Wiktionary takes the noun as the neuter of the adjective molīnus, from molō (“to grind”).[1] The early forms show the loss of the Latin /l/ and /n/ between vowels that is typical of Galician-Portuguese.[2][6]

The same Latin word is Galician muíño, Spanish molino, Catalan molí, French moulin and Italian mulino.[7][1] Portuguese also has moinha and muinha “chaff”.[7]

The verb molō goes back to Proto-Indo-European *melh₂- (“to crush, grind”), which also gave Ancient Greek μύλη (múlē, “mill”), Gothic 𐌼𐌰𐌻𐌰𐌽 (malan) and Lithuanian málti.[8][1]

Earliest recorded meaning

Houaiss dates the word to 1273 from Cunha's medieval index, with the plural moyos in the 13th century;[2][3] Cunha gives moỹo and moyno in the same century.[2][3]

Semantic evolution

The word has always meant both the grinding machine and the building that houses it.[2] Cardoso (1569) glosses it as a water mill, and Bluteau lists the many parts of a mill, the wheel, the paddles, the millstones and the hopper among them.[9][10] Morais (1789) describes it as driven by running water or by the wind.[11] Vieira records the moinho de vento and the figurative fazer vir a agua ao seu moinho, to draw an advantage to oneself.[12]

The word then spread to any grinding machine, such as the coffee or pepper mill, and in Portugal to the olive press and the amount of olives pressed at once.[2][13] Informally a moinho is a glutton, and in Brazil the name of a ribbon dance.[2][14]

Timeline

  • 1273 – first record.[2]
  • 13th century – moỹo and moyno.[3]
  • 1365 – the plurals moiios and mouios.[2]
  • 15th century – muynho.[2]
  • 1569 – Cardoso glosses Moinho with Latin pistrinum aquarium “water mill”.[9]
  • 1712–1728 – Bluteau lists the parts of a mill.[10]
  • 1789 – Morais describes mills driven by water or wind.[11]
  • 1871–1874 – Vieira records moinho de vento.[12]

Meanings

Noun

  1. A mill: a machine with two millstones, driven by wind, water, animals or a motor, for grinding grain.[2][15][1]
  2. The building that houses such a machine.[2][15][1]
  3. Any machine for grinding: moinho de café, moinho de pimenta;[2][13][1] (chiefly Portugal) a kitchen grinder.[2][13][1]
  4. An olive press; the quantity of olives ground at one time.[2][13]
  5. (informal) A person who eats a lot and fast.[2][14]
  6. (dance, music) The ribbon dance pau-de-fita.[2]

Word family

  • moinho de vento

Usage notes

The proverb águas passadas não movem moinhos “past waters don't turn mills” means that what is over no longer matters.[1] Moinhos de vento “windmills” are, figuratively, fantastic or impossible things.[14]

References

  1. ^ a b c d e f g h i j k l m 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 Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. moinho
  3. ^ a b c d e Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. moinho
  4. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. moinho
  5. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. s.v. molinum
  6. ^ Ciberdúvidas da Língua Portuguesa, ISCTE – Instituto Universitário de Lisboa, https://ciberduvidas.iscte-iul.pt
  7. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 5644
  8. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  9. ^ a b Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. moinho
  10. ^ a b Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. moinho
  11. ^ 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. 2, 90
  12. ^ 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. 4, 291
  13. ^ a b c d Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. moinho
  14. ^ a b c Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 6252
  15. ^ a b Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. moinho

Related etymologies

Cite this entry

“Moinho.” Etymologically, 15 Nov. 2026, etymologically.com/pt/moinho. Accessed 16 Nov. 2026.

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