What is the meaning of Diabeł?

devil (evil creature, the objectification of a hostile and destructive force)

devil (fictional image of a man, usually red or orange in skin color; with a set of horns on his head, a pointed goatee, and a long tail, and carrying a pitchfork; that represents evil and portrayed to children in an effort to discourage bad behavior)

devil (someone unbearable, evil, or dangerous)

daredevil (someone very capable, clever, or courageous)

A card game of chance or gambling.

foreign, pagan god; idol

Source: wiktionary.org