A word jokingly used for the term 'Anime'.
It can be used by people who like and watch anime, but are kind of ashamed of it or at least want to distant themselves from the weeaboo culture.
It also can be used to offense weeaboos, when they are talking about anime.
I watched an animu yesterday, dude. Was pretty great.
Go watch your animu and read your mango or whatever, u weeb.