Regarding the word Boricua not being spanish, it may be true that it may have originated in Taino,but according to the REAL ACADEMIA ESPAÑOLA DICCIONARIO DE LA LENGUA ESPAÑOLA - Vigésima segunda edición, it is an adjetive meaning from or of Puerto Rico.
The Pequeño Larousse Ilustrado, is a small abridged illustrated dictionary . You might want to consult an unabridged spanish dictionary.
Regarding the word Boricua not being spanish, it may be true that it may have originated in Taino,but according to the REAL ACADEMIA ESPAÑOLA DICCIONARIO DE LA LENGUA ESPAÑOLA - Vigésima segunda edición, it is an adjetive meaning from or of Puerto Rico.
The Pequeño Larousse Ilustrado, is a small abridged illustrated dictionary . You might want to consult an unabridged spanish dictionary.