English Reference
noun · verb

barrel

n. · v.
US /ˈbæɹəɫ/ UK /bˈæɹəl/ bar·rel UK spelling barrel's, barrel's

  1. 01 B1 Intermediate

    n.a large, round container made of wood or metal, used for storing liquids like oil, wine, or beer.

    n.a cylindrical vessel, traditionally made of wooden staves and hoops, used for the storage and aging of liquids.

    Simple

    The wine was left to age in an oak barrel for several years.

    In context

    Distilleries often reuse charred oak barrels to impart a specific smoky flavour profile to the maturing spirit.

  2. 02 B2 Upper Intermediate

    n.the metal tube of a gun that the bullet travels through when it is fired.

    n.the metallic tube of a firearm or cannon through which a projectile is discharged.

    Simple

    The soldier spent the afternoon cleaning the barrel of his rifle.

    In context

    The rifling inside the barrel induces a spin on the bullet, significantly improving the weapon's accuracy over long distances.

  3. 03 B2 Upper Intermediate

    n.a specific amount of liquid, usually used when talking about the price of oil.

    n.a standard unit of volume for various liquids, most notably used in the international petroleum industry.

    Simple

    The price of a barrel of oil rose sharply after the news of the strike.

    In context

    Economists monitored the cost per barrel closely, as fluctuations in energy prices typically precede broader inflationary trends.

  4. 04 C1 Advanced Informal Sport

    n.a wave that curls over as it breaks, creating a hollow space like a tube.

    n.a hollow, tube-like space formed by a breaking wave, highly sought after by surfers.

    Simple

    The surfer disappeared into the barrel and came out the other side.

    In context

    Riding deep inside the barrel requires precise board control and a keen understanding of the wave's velocity.

  5. 05 B2 Upper Intermediate Informal

    v.to move very fast, often in a way that seems dangerous or out of control.

    v.to move at high speed and with great force, often implying a lack of precision or control.

    Simple

    The truck came barreling down the hill toward the intersection.

    In context

    The storm clouds were barreling across the plains, forcing the farmers to seek immediate shelter before the hail began.

    Usage

    Often used with 'down' or 'along'.

    boltdashhurtle
  6. 06 C2 Proficiency Technical Computing

    v.to curve outward in the middle like the shape of a barrel.

    v.to exhibit a convex distortion where the sides of an image or object bulge outwards.

    Simple

    The wide-angle lens caused the edges of the photo to barrel slightly.

    In context

    Software corrections are often necessary to rectify the barrel distortion inherent in low-cost wide-angle optics.

Usage barrels a day · barrels of oil

Rosebank is estimated to contain the equivalent of up to 300 million barrels of oil and at its peak will produce approximately 69,000 barrels a day.

BBC News· 17 Aug 2026

Pacific island state declared a state of emergency as the storm barreled toward the archipelago, packing winds that could gust up to 85 mph (137 kph).

Phys.org· 15 Aug 2026

From Middle English barel, from Anglo-Norman baril, Old French baril, bareil (“barrel”), of uncertain origin. An attempt to link baril to Old French barre (“bar, bolt”) (compare Medieval Latin barra (“bar, rod”)) via assumed Vulgar Latin barrīculum meets the phonological requirement, but fails to connect the word semantically. The alternative connection to Frankish baril, beril or Gothic 𐌱𐌴𐍂𐌹𐌻𐍃 (bērils, “container for transport”), from Proto-Germanic barilaz, bērilaz (“barrel, jug, container”), from Proto-Indo-European bʰer- (“to carry, transport”), is more plausible as it connects not only the form of the word but also the sense; equivalent to bear + -le. Compare also Old High German biril (“jug, large pot”), Luxembourgish Bärel, Bierel (“jug, pot”), Old Norse berill (“barrel for liquids”), Old English byrla (“barrel of a horse, trunk, body”). More at bear.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin ine-pro *bʰer-
Level C1 · Advanced
Frequency Common
Updated