Sixty minutes with one beautiful female (5)
I believe the answer is:
houri
'beautiful female' is the definition.
(I've seen this before)
'sixty minutes with one' is the wordplay.
'sixty minutes' becomes 'hour' (I've seen this before).
'with' is a charade indicator (letters next to each other).
'one' becomes 'i' (Roman numeral).
'hour'+'i'='HOURI'
(Other definitions for houri that I've seen before include "Young beautiful woman of the Moslem Paradise" , "Virgin companion of the Muslim faithful in Paradise" , "real beauty" , "Beautiful Muslim nymph" , "faithful female companion" .)