Etymograph

English

jail

Jail comes from Middle English gayole, from Anglo-Norman jaiole ‘prison’, from Latin caveola ‘little cage’, diminutive of cavea ‘cage’, from cavus ‘hollow’.

  1. Proto-Italicc. 1500–700 BCE*kawos1reconstructed
  2. Latinc. 75 BCE–200 CEcavus1‘hollow’
  3. Latinc. 75 BCE–200 CE*caveus1reconstructed
  4. Latinc. 75 BCE–200 CEcavea1‘cavity, cage’
  5. Latinc. 75 BCE–200 CEcaveola1‘little cage’
  6. Anglo-Normanc. 1066–1400jaiole1‘prison’
  7. Middle Englishc. 1150–1500gayole1‘jail, prison’
  8. Englishearliest quotation 1966jail1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English jail
  2. Earliest quotation in Wiktionary’s entry: 1966, Robert Coover, Part II, section 11: “Taking a shower at the high school, Tommy (the…”.

Lineage

  1. Proto-Italicc. 1500–700 BCE*kawosWiktionary, English jailreconstructed
  2. Latinc. 75 BCE–200 CEcavusWiktionary, English jail‘hollow’
  3. Latinc. 75 BCE–200 CE*caveusWiktionary, English jailreconstructed
  4. Latinc. 75 BCE–200 CEcaveaWiktionary, English jail‘cavity, cage’
  5. Latinc. 75 BCE–200 CEcaveolaWiktionary, English jail‘little cage’
  6. Anglo-Normanc. 1066–1400jaioleWiktionary, English jail‘prison’
  7. Middle Englishc. 1150–1500gayoleWiktionary, English jail‘jail, prison’
  8. Englishearliest quotation 1966jailWiktionary, English jail. Earliest quotation in Wiktionary’s entry: 1966, Robert Coover, Part II, section 11: “Taking a shower at the high school, Tommy (the…”

The story

Fully displaced native Middle English quartern (‘prison, jail, cell’), from Old English cweartern (‘jail, prison’). Partially displaced native Middle English lok, from Old English loc (‘enclosure, pen; jail, prison’), whence lock; and Middle English carcern, from Old English carcern, from Latin carcer (‘prison, jail’).

Full etymology on Wiktionary

Word family

English words that share an ancestor with jail, grouped by the ancestor they share, most familiar first.

through Proto-Indo-European *ḱewh₁- ‘to swell’

  • church ← chirche ← ċiriċe ← *kirikā ← κυριακόν
  • kirk ← kirke ← kirkja ← ċiriċe ← *kirikā
  • hound ← hownde ← húnn ← *hūnaz ← *ḱūnós
  • cyst ← cystis ← κύστις ← κῠ́ω ← *ḱuh₁éyeti
  • cumulus ← *ḱuh₁mós
  • cajole ← cajoler

through Proto-Indo-European *ḱowh₁ós

  • cavernous ← caverneux ← caverna ← cavus ← *kawos

through Proto-Italic *kawos

  • cavern ← caverne ← caverne ← caverne ← caverna
  • concave ← concavus ← cavus

through Latin cavus

90 more relatives in the full family tree

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Today it means

noun A place or institution for the confinement of persons held against their will in lawful custody or detention, especially (in US usage) a place where people are held for minor offenses or with reference to some future judicial proceeding.

Sources

Sources: Wiktionary, “jail”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Italic *kawos / jail