Praise be to Allah.
We have heard many suggestion as to the meaning of this world, which may be exaggerations made up by some people, or they may rumours spread by competitors.
The correct view is that this is a name that comes from Japan. It is taken from the (English) words “Pocket monster” and means an animal that is small enough to fit in one’s pocket. “Pokemon” is an abbreviation of these two words.
And Allaah knows best.