This is the 5417th most frequent Catalan word.
charlie
The word "charlie" is not a Catalan term; it is English slang typically meaning "fool" or referring to cocaine.
Here, 'Charlie' is used as a proper noun referencing a person's name.
En Charlie va arribar ahir a Barcelona.
Charlie arrived in Barcelona yesterday.
In this sentence, 'Charlie' is again a proper noun, representing a person known to both speaker and listener.
Per cert, on és el llibre que et va donar el Charlie?
By the way, where is the book that Charlie gave you?
Here, 'Charlie' serves as a subject, central to the narrative giving him emphasis in the context of the expressed action.