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Banzai is a Japanese word almost same meaning with English word "Long live the king!!".
Direct translation is "10000 years!". Thus, it can be applied not only to emperors but to anybody anything.

The word was invented about a hundred years ago in the period of Meiji emperor era, the era when Japan opened to the world and rapidly modernized and defeated China and Russia at wars.
Ever since the word is commonly used by Japanese peopele when some good fortune occured to them in private life to official matters. Nowadays the word is nothing to do with emperors.

To Americans, banzai became familiar with the scenes of Japanese soldiers shouting when they won battles or when they committed suicidal and kamikaze attakcs. As old Japanese society never allowed Japanese to surrender, they had no choices but die, and the last moment they shout "banzai".
When somebody marry, people would shout "Banzai".
When accepted by a great University, a student would say "Banzai".
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Japanese word "banzai" means "10000 years" that is exactly same menaing with "Long live the king!" or "Long live".
"Ban" means "10000". "Zai" means "years".
by ramunenakayama November 04, 2007
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1. A tactic utilized by the Japanese Samurai and later the Imperial Japanese Army from the feudal era up to the end of World War 2.

Where when the enemy has weakened their unit to the point where it has no option but to retreat or surrender, they issue a "Banzai" charge in which they rush head first into the enemy and attempt to engage in close combat, usually with bayonets and swords.

Typically an act of self sacrifice rather then to dishonor their army and country by surrendering to the enemy, an action related to Bushido.

It is traditional to scream the word before attacking followed by a non-linguistic war cry.

2. Slang in video games for a hopeless rush against the enemy, often without any Japanese or Bushido affiliation.
1. "We've got both flanks locked, they gotta retreat sooner or later!"
"Banzai!! AHHHHH!!!"
"Shit, banzai charge! Fire at will!"

2. Damn man you banzai'd bad on that one.
by Bluehawk September 10, 2004
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You idiots. I am a Japanese. Only showing wrong definition in urbain dictionary by idiot American's discription.

Banzai means in Japanese 10000 years that means Long live the King.
Banzai, they acepted my idea.
by ramunenakayama November 08, 2007
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1. A suicidal call, or simply a battlecry of Japanese origin.

2. A moderately funny TV show on Channel 4 UK TV. Uses sounds and music from the famous Bruce Lee film, Enter The Dragon.
1. There's an SAS squad. Banzai!!!


Mister Cheeky Chappy very happy!
by Comrade Dmitri March 05, 2004
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When you're getting a blowjob from some girl, and you tell her you feel like you finished. Then she gets confused, takes it out, and scream "BANZAI!" in her face and explode in her eye.
Girl: What do you mean you---

by inthelifeofnorris October 27, 2008
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A certain type of prank call chanted in a Japanese accent .
You phone up the person in question with an unknown number
they answer: ''Hello?''
You and 2 or more friends: ''BANZAI BANZAI BANZAI''
Shout this repeatedly until phone call ends. Whispering also works well.
You can also use the word in normal sentences
by banzai111 August 09, 2010
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