It means a derelict person, like a feral type of weirdo. It could include junkies other lowlifes.
The word deero appears in the lyrics of the song "Everything you wanted"
Usually refers to an opium final boss. Obsessive black people that obsess over Rick owens, balenciaga and other type of lowlife demonic designer brands
Deero usually meant in opium slang as demonic
The part leh usually refers to a person of king status