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
In fact, my granddaddy used to call my small sister 'Lumia', which in north of Spain could be used as a familiar substitute for 'Rascal'.
From a land of gazillion languages (India), I can tell ya, this is inevitable.