Gallon means: A unit of volume, equivalent to eight pints.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
gallon
A unit of volume, equivalent to eight pints.
Seen in the wild
8 citations · last seen May 2026
Seen in the wild
BlueskyMay 2026
I ordered a gallon of pressure washer soap from Sam's Club and the website tried to convince me to add a three-year Protection Plan.
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BlueskyMay 2026
Last night it was $4.33/gallon. Jumped 26¢ gallon overnight.
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BlueskyMay 2026
⛽️ The average price of a gallon of gas hit $4.39 this morning — up 9¢ in just 24 hours, and 47% higher than before the Iran war. A month ago, it was $4.06. A year ago, it was $3.19. This is ALL Trump’s fault! 😡
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BlueskyMay 2026
Trump has nothing to show for his war in Iran except 13 dead service members, a closed Strait, a broken ceasefire, and a $4.30 gallon of gas. apnews.com/article/oil-...
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BlueskyMay 2026
A rough conversion for US$/USgallon to GBP/litre is to divide by 5. So $5 per US gallon = £1 per Litre. The error is about 2% at todays exchange rate.
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Definitions
UK
#1·Apr 27, 2026UK
A unit of volume, equivalent to eight pints.
The pipe burst and gallons of water flooded into the kitchen.
Origin: From , galoun, galun, from , liquid measure (compare ), from , measure of wine, from , possibly from , ultimately from . Cognate with , . Related to (from ), ,. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
For parents
Gallon means: A unit of volume, equivalent to eight pints.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
For ESL learners
gallon means: A unit of volume, equivalent to eight pints.. Register: neutral, standard English. A common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; native speakers immediately notice when slang appears in formal contexts, so always check the surrounding register before producing it yourself. A formal-English equivalent (a synonym or descriptive phrase) is usually safer in writing. When in doubt, paraphrase rather than reuse the slang form.
Heard in the wild
“I ordered a gallon of pressure washer soap from Sam's Club and the website tried to convince me to add a three-year Protection Plan.”
— Bluesky· May 2026“A rough conversion for US$/USgallon to GBP/litre is to divide by 5. So $5 per US gallon = £1 per Litre. The error is about 2% at todays exchange rate.”
— Bluesky· May 2026“a cursive thought that just occurred to me: as the Trumpression goes on, and gas goes above $10 a gallon, at what point are we going to start seeing gas trailer hijacking? it's not that there was no risk before, but...”
— Bluesky· May 2026
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UK
#2·Apr 27, 2026UK
(US) 231 cubic inches or approximately 3.785 liters for liquids (a "U.S. liquid gallon").
The pipe burst and gallons of water flooded into the kitchen.
Heard in the wild
“Last night it was $4.33/gallon. Jumped 26¢ gallon overnight.”
— Bluesky· May 2026“⛽️ The average price of a gallon of gas hit $4.39 this morning — up 9¢ in just 24 hours, and 47% higher than before the Iran war. A month ago, it was $4.06. A year ago, it was $3.19. This is ALL Trump’s fault! 😡”
— Bluesky· May 2026“Trump has nothing to show for his war in Iran except 13 dead service members, a closed Strait, a broken ceasefire, and a $4.30 gallon of gas. apnews.com/article/oil-...”
— Bluesky· May 2026“I saw a screenshot of someone complaining about $7 gas and it costing $200 to fill up a Silverado, and my immediate reaction was, instead, "holy shit; that thing has a 30 gallon gas tank?"”
— Bluesky· May 2026“Last night it was $4.33/gallon. Jumped 36¢ a gallon overnight.”
— Bluesky· May 2026
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UK
#3·Apr 27, 2026UK
(British, Canadian) exactly 4.54609 liters; an imperial gallon.
The pipe burst and gallons of water flooded into the kitchen.
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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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UK
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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.
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Other words near "gallon" (G)
galley newsgalley slavegalley yarngallinipperGallipoli gallopgallockgallopergallowagallowsnessgallusGally-Crowgalopin
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Related terms
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Semantically related
- pint78%
A unit of volume, equivalent to.
- pottle69%
(archaic) A former unit of volume, equivalent to half a gallon, used for liquids and corn; a pot or drinking vessel of around this size.
- cup62%
A customary unit of measure.
- imperial pint61%
(UK, Commonwealth) A unit of liquid volume in the imperial system equal to 0.568 litres and divided into 20 fluid ounces.