Definition from Wiktionary, the free dictionary
Pikachu (plural Pikachu or Pikachus)
- (trademark, video games, anime, manga) A member of a small yellow mouse-like Pokémon species that has red cheeks and a tail shaped like a lightning bolt, and is able to control electricity.
- (trademark) plural form of
For usage examples of this term, see the citations page.
The official Pokémon products and video games use the plural Pikachu, although Pikachus is commonly used elsewhere.