"old girl" means: An alumna, especially of a public school.. This is a fairly neutral word with no inherent risk attached. There is no real cause for parental concern; it is descriptive vocabulary rather than something dangerous. If your child uses it, context will usually make the meaning clear. A brief, curious question about where they heard it is generally enough to know whether to follow up.
old girl
(chiefly, British) An alumna, especially of a public school.
Seen in the wild
DJT thinks America is a 13-yr old girl.
Bet the 6 year old girl to his left is suuuper loving this conversation
In which I lose myself in my home village - again 😂 - and sound like Darth Vader because it’s a bit of a climb for an old girl 😄 Wales 🏴 you can’t beat it 😍 #wales #cymru (Shame about the video clunk…
San Diego crash victim was high school freshman https://www.newsbeep.com/us-ca/300446/ A 14-year-old girl killed Sunday in a crash in the San Carlos neighborhood has been identified as a…
Teenagers deny murder of 16-year-old girl #LocalToOssett #westyorkshire
Definitions
(chiefly, British) An alumna, especially of a public school.
Listen, old girl, I've got some news.
"old girl" means: An alumna, especially of a public school.. This is a fairly neutral word with no inherent risk attached. There is no real cause for parental concern; it is descriptive vocabulary rather than something dangerous. If your child uses it, context will usually make the meaning clear. A brief, curious question about where they heard it is generally enough to know whether to follow up.
"old girl" means: An alumna, especially of a public school.. Register: neutral, standard English, usable in most everyday contexts. Note the regional or dialect label (British) — usage may sound odd outside that variety. A common non-native mistake is to use the word in the wrong register, or to assume one fixed meaning when it is actually polysemous; always check the surrounding register and the audience before producing it yourself. In formal writing, prefer a neutral synonym or a short descriptive phrase, and use this word only when you have heard or read it being used naturally in a comparable context.
“DJT thinks America is a 13-yr old girl.”
— Bluesky· May 2026“Bet the 6 year old girl to his left is suuuper loving this conversation”
— Bluesky· May 2026“In which I lose myself in my home village - again 😂 - and sound like Darth Vader because it’s a bit of a climb for an old girl 😄 Wales 🏴 you can’t beat it 😍 #wales #cymru (Shame about the video clunkiness but I’m sure you can tell I’m not exaggerating 😂)”
— Bluesky· May 2026“San Diego crash victim was high school freshman https://www.newsbeep.com/us-ca/300446/ A 14-year-old girl killed Sunday in a crash in the San Carlos neighborhood has been identified as a…”
— Bluesky· May 2026“Teenagers deny murder of 16-year-old girl #LocalToOssett #westyorkshire”
— Bluesky· May 2026
Comments
For specific readers
Why is this section here?
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
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🇬🇧About British & Irish slang slang
UK and Irish slang — Cockney, Scouse, Geordie, Yorkshire, Glaswegian, Brummie, Welsh, West Country, plus Irish English. Centuries of regional dialects feeding into modern British and Irish street talk.
See all British & Irish slang slang on Slangora.
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Other words near "old girl" (O)
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Semantically related
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(chiefly, British) An alumnus, especially of a public school.
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(British) A girl chosen to lead a school's sixth form, whose duties may include representing the school and organising the prefects.
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(slang, US) One's girlfriend, wife or female significant other.
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(colloquial) A term of address to a female (see usage notes).
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(British, historical) A member of the Women's Land Army.