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over-under

American  
[oh-ver-uhn-der] / ˈoʊ vərˈʌn dər /

adjective

  1. (of double-barreled firearms) with one barrel mounted over the other.

noun

  1. such a firearm.

over-under British  

adjective

  1. (of a two-barrelled firearm) having one barrel on top of the other

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. an over-under firearm

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of over-under

First recorded in 1910–15

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It proclaims an over-under “ME/WE,” that reads as a word and its reflection.

From The Wall Street Journal • Dec. 17, 2025

On the eve of their opener on Sunday against the Seattle Seahawks at Lumen Field, FanDuel sportsbook has the Rams over-under win total at 6½ games.

From Los Angeles Times • Sep. 8, 2023

The over-under for the game was 45 points, and the total was 44.

From Seattle Times • Aug. 3, 2023

The over-under line was set at 35½ — and sure enough, Washington finished exactly with 35 wins.

From Washington Times • Apr. 10, 2023

The over-under fell to 31½ points on Friday, according to FanDuel Sportsbook, the lowest ever posted for an FBS game.

From Seattle Times • Nov. 19, 2022

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.