1. An electric mouse pokémon. Many of them gather in electrical storms. It has small pouches on its cheeks that discharge electricity. (from the pokédex)

2. A cute, small pokémon that was crossed between a lightning bolt and a mouse. If you grab one's tail, it'll shock the pants off ya.

3. See pokemon, pokémon, pocket monsters, or electrical mouse.
Brock: *Lost in fog* Hey! Where are you guys!?
Ash: Over here!
Brock: *Sees something* Oh! There you are! *grabs Pikachu's tail by mistake*
Pikachu: KACHUUU!! ->.<-
Brock: Eeeyaaaaaaah!!*dead* X(
by Ganruichi October 21, 2005
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Just like other japanese pokemon names, the word Pikachu has a childish meaning from onomatopeic expressions such as girigiri and pikapika. Pika is taken from the sound of sparks or the effect of something being shiny. Chu is the sound a mouse makes as well as a kiss. Easy for children to remember and understand. Pikachu is an electric mouse pokemon, although he looks like a rabbit squirrel tiger with cockatiel cheeks. He popularized pokemon and is the main mascot of the show in the united states. Much more popular now that in japan as now japan has been taken over by battle beatles. Some people want him to die and some want to make love to him. I thought he was cute when I was 12.
Pikachu fainted. Let's eat him.
by m0u5y January 3, 2006
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While it is an adorable yellow creature, when referred to by Chelsea Handler, it refers to a woman's pussy.
Brittany Spears's pikachu is all over the internet because she doesn't wear any panties.
by d-shizzle-fo-rizzle September 11, 2007
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You: Hey look...A Pikachu!
Me: Fuck! The one time I don't have my Pokeball...
by ~Chelsea Louise January 2, 2007
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A fictitious animal in the world of Pokemon, It's name derives from the Japanese meaning: Electric Mouse. It's also the main character's favorite Pokemon.

Aside from that, Pikachu's Popularity made it a World Wide Icon and an official Icon to the Nintendo Company along with the other Prime Characters such as: Mario, Link, and Kirby.
Daniel:Over 10 years old and still running!

Noah: Yeah not to mention that every year Japan gives Pokemon a big tribute by parading around Tokyo with a Giant Pikachu Balloon.

Daniel: And don't forget that Pikachu is One of the Main Characters in the Nintendo Corporation... I Mean Just Look At the Smash Bros. series!
by Angel Rodriguez August 31, 2007
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1) A Japanese Pokemon character
2) A phrase meaning "Shall we smoke?". Derived from "피까?" in Korean.
1) I hate pikachu among all pokemon monsters. It's disgusting.
2) Dude A: Hey, I finally quit smoking.

Dude B: Pikachu?
by pingka pingka September 28, 2017
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When a female is giving a male oral sex, the male pulls his penis out of the mouth, slaps both of her cheeks with the penis so they turn bright red. He then pulls out a tazer and shocks her.
Bob: I thought you were gonna have sex with her? Why do you have a tazer?

Bill: I'm going to give her a Pikachu.
by ImprezaSTi April 4, 2010
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