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BYOB

American  
Or BYO

abbreviation

  1. bring your own bottle: (used in invitations, on signs, etc., to indicate that alcohol will not be provided, but that guests or patrons may bring in alcohol and drink it.)

BYOB British  

abbreviation

  1. bring your own beer

  2. bring your own booze

  3. bring your own bottle

"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 BYOB

First recorded in 1970–75

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.

If the flag was out, she told her neighbors, it meant she was having drinks and porch hangs — BYOB.

From Salon • Jan. 27, 2026

Prices: $45 per person, BYOB, plus tax and tip.

From Washington Post • Sep. 16, 2021

The message in this case is clear: We really, really don’t want you to BYOB.

From The Wall Street Journal • Aug. 20, 2015

The Lafayette Room was BYOB, a recent development for which some residents fought hard.

From Washington Times • Aug. 23, 2014

Dormitory rooms, carefully modeled after prison cells, are strictly BYOB: bring your own bookshelves, blankets, bulletin boards.

From Time Magazine Archive

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.