“Kino”, from the Greek “kine”(to move), is Internet slang for a motion picture. In particular, it is used to denote works with special artistic merit. The word is also used to describe events and art bearing a cinematic quality either in concept or execution.
4chan may be an anime website but not everything there derives from anime. In this case, kino- has been an prefix referring to movies since before 4chan, and probably anime, even existed.