BB
1 Americannoun
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a size of shot, 0.18 inch (0.46 centimeter) in diameter, fired from an air rifle or BB gun.
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Also called BB shot. shot of this size.
abbreviation
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ball bearing.
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Baseball. base on balls; bases on balls.
abbreviation
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bail bond.
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baseboard.
abbreviation
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bail bond.
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Blue Book.
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B'nai B'rith.
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Bureau of the Budget.
abbreviation
symbol
abbreviation
Usage
What else does bb mean? In text messages and online, bb can be short for baby, especially as it's used as a term of endearment for significant others or friends. In this sense, it can sometimes be pronounced as [bey-bee]. Bb can also be short for quite a few other things, including basketball, bye-bye, the pellets of a BB gun, and some NSFW applications.
Etymology
Origin of BB
An Americanism dating back to 1870–75
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.
In 2012 scientists thought they had found a planet orbiting Alpha Centauri B, dubbed Alpha Centauri Bb, but in 2015 other researchers seemingly ruled out the planet’s existence.
From Scientific American • Nov. 17, 2021
I, the undersigned, being of sound mind and body, knowingly embark on a one-way journey to the second moon of 16 Cygni Bb.
From Nature • Feb. 14, 2017
Instead of neatly fastening documents here on Naxerine Bb, these paper clips instantly melted due to the heat of our binary suns.
From Washington Post • Dec. 10, 2014
Alpha Centauri B is thought to have a planet, which would be the nearest exoplanet to Earth, and so is known as Alpha Centauri Bb.
From New York Times • Aug. 4, 2014
The alphabet, thankfully, is nowhere to be seen; if I saw Aa Bb I’d probably start the Cycling again.
From "It’s Kind of a Funny Story" by Ned Vizzini
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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.