EDIT: It looks that some dictionaries on the internet use Lumia and Lumias as the equivalent in Spanish for prostituta. I can guarantee (being Spaniard born and raised and having spoken in Spanish with people from literally any spanish-speaking country) that people use Lumi or Lumis in very, very rare occasions. Lumia is even weirder (I just learnt it to be honest) and I dont really understand why the dictionary only includes Lumia. (rae.es). Honestly I think that that word will be removed from the dictionary sooner than later.

I am sorry to say this but the entry is wrong :( Lumi = hooker. Lumia doesn't mean anything in Spanish. Actually most of the spanish speakers I met don't even know that Lumi = hooker (I have one cousin called Lumi and no one noticed until she was in her early 20s...)

Anyway it probably means something funny in other languages :p