Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

See What's Trending Now See More Trending Words
1

BB

noun \ ˈbē-(ˌ)bē \

Definition of BB

1 :a shot pellet 0.18 inch in diameter for use in a shotgun cartridge
2 :a shot pellet 0.175 inch in diameter for use in an air gun

See BB defined for English-language learners

See BB defined for kids

Explore M-W

tycoon
17 English Words that Come From Japanese
video-title-words-of-the-year-1066
Words of the Year: 1066
one-green-toy-robot-amidst-many-red-toy-robots
The Exceptions Quiz III
alt-59e60c9d3e5ea
Trending: McCain: Half-Baked, 'Spurious' Nationalism

First Known Use of bb

1832

2

BB

abbreviation

Definition of BB

1 bachelor of business
2 ball bearing
3 base on balls
4 blue book
5 B'nai B'rith

Phrases Related to BB

Related Phrases

BB Defined for English Language Learners

BB

noun

Definition of BB for English Language Learners

  • : a small metal ball that is fired from a BB gun

Learn More about bb

  1. See words that rhyme with BB Spanish Central: Translation of BB Nglish: Translation of BB for Spanish speakers

Seen and Heard

What made you want to look up BB? Please tell us where you read or heard it (including the quote, if possible).

show hide

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

hew

play

to conform or adhere

Get Word of the Day daily email!

TRENDING NOW

  1. spurious of a deceitful nature or quality

  2. righteous We provide an assortment of definitions

  3. Kafkaesque 'A nightmarish quality'

  4. mike "microphone"

  5. moron “a very stupid person”

SEE ALL

BROWSE DICTIONARY

Test Your Vocabulary

The Exceptions Quiz III

  • one-green-toy-robot-amidst-many-red-toy-robots
  • Which of these words does not mean "nonsense"?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

alt-59e77dc36c593
The Origins of 'Lobbyist'

From the front hallways to the back rooms

alt-59e673567065d
The History of the Word 'Terrorism'

Noah Webster first entered the term in 1840

alt-59e65152518a6
'Regimen' vs. 'Regiment'

The rule of thumb for words about rules

alt-59e50f5a357b4
'Spox' May Go On The Record

From newsroom lingo to the mainstream

Ask the Editors

video-title-words-of-the-year-1066
Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

payday
How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless
Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals
Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

one-green-toy-robot-amidst-many-red-toy-robots
The Exceptions Quiz III

Which of these things doesn't belong?

Take the quiz
knupfer-painting-solon-before-croesus
Forms of Government Quiz

Name that government! Or something like that.

Take the quiz
Name That Thing
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz
SCRABBLE® Sprint
SCRABBLE® Sprint

SCRABBLE® fans, sharpen your skills!

Play the game