Mister, in Spanish (5)
I believe the answer is:
senor
'mister in spanish' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for senor that I've seen before include "'Mister' in Spain" , "address on the Costa del Sol" , "way of addressing Figaro, say" , "Spanish for Mr" , "Snore (anag.)" .)