Etymologically

Etymology and origin of the Latin word lactes

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC Plautus More words from the 3rd century BC
Ultimate origin
Latin lac
Etymology tree
inherited borrowed derived
Latin lac
Latin lactēs
Romanian lapți
From the same root
Latin lacteō ← lac
Latin lacteus ← lac
Latin lactūca ← lac

Pronunciation

  • Classical: [ˈɫak.teːs][1]
  • Ecclesiastical: [ˈlak.tes][1]

Forms

lactēs f pl (genitive lactium); third declension[1]

Etymology

It is from Latin lac (“milk”);[2][3][4] Georges describes these intestines as covered with a milky fat.[4] The TLL also mentions a derivation from lābī “to slip”,[5] and Lewis & Short connected it with Ancient Greek λαγαρός (lagarós) and languidus.[6] De Vaan traces the base to Proto-Italic *(g)lagt- and Proto-Indo-European *glg-t- (“milk”).[3]

Earliest recorded meaning

It is found from Plautus on,[3][7] who uses it humorously of a hungry man's intestines, and in the proverb about tying up a runaway bitch with lambs' guts, for a useless precaution.[4][8]

Semantic evolution

The word named the small intestines of four-footed animals, covered with a milky fat, and the dish of chitterlings made from them, as in Titinius' lactes agninae, lambs' chitterlings.[2][4] Pliny the Elder uses it anatomically for the small intestines, through which food passes,[6] and Persius pairs it with lungs as fat fare.[4] Suetonius' lactes of lampreys refers to the milky substance in fish, the milt.[8][1] Lewis & Short call the word ante-Classical and post-Augustan.[6] Grammarians noted that Plautus used lactes as a masculine plural, distinct from lac.[5]

Timeline

  • c. 250–184 BC – Plautus uses it for the guts and in a proverb.[4][8][7]
  • end of the 2nd or beginning of the 1st century BC – Titinius mentions lambs' chitterlings.[4][7]
  • 34–62 AD – Persius pairs fat lactes with lungs.[4][7]
  • 23/24–79 AD – Pliny the Elder uses it for the small intestines.[6][7]
  • c. 75–c. 150 AD – Suetonius mentions the lactes of lampreys.[8][7]

Meanings

Noun

  1. (plural) The small intestines.[2][6]
  2. (as food) Chitterlings.[2][4]
  3. The milt of fish.[1][8]

Usage notes

Plautus' proverb alligāre fugitīvam canem agnīnīs lactibus, to tie a runaway bitch with lambs' guts, describes a precaution that is bound to fail.[8][4] The singular lactis is given only by Priscian, wrongly according to Lewis & Short.[6]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  4. ^ a b c d e f g h i j Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  5. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  6. ^ a b c d e f Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  7. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  8. ^ a b c d e f Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
Cite this entry

“Lactes.” Etymologically, 13 Nov. 2026, etymologically.com/la/lactes. Accessed 14 Nov. 2026.

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