I leave the older Spaniard (5)
I believe the answer is:
senor
'spaniard' is the definition.
('mister' in Spanish)
'i leave the older' is the wordplay.
'leave' indicates named letters should be taken away.
'the older' becomes 'senior' (I've seen this in another clue).
'senior' with 'i' taken out is 'SENOR'.
(Other definitions for senor that I've seen before include "Spanish form of address" , "way of addressing Figaro, say" , "Norse (anag.)" , "'Mister' in Spain" , "address on the Costa del Sol" .)