The Spanish miss having enough characters to fill all this! (8)
I believe the answer is:
senorita
'the spanish miss' is the definition.
(I've seen this in another clue)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for senorita that I've seen before include "miss from Valencia" , "Young Spanish woman for notaries" , "Treason I commit for young Spanish woman" , "Young Spanish lady" , "Notaries surrond Spanish girl" .)