Monkey sports with one female between two rivers (8)
I believe the answer is:
perisher
'monkey' is the definition.
(both can mean a mischievous person)
'sports with one female between two rivers' is the wordplay.
I cannot really see how this works, but
'sports' could be 'pe' (Physical Education) and 'pe' is found in the answer.
'one' could be 'i' (Roman numeral) and 'i' is located in the answer.
'female' could be 'she' ('she' refers to a woman) and 'she' is located in the answer.
'rivers' could be 'rr' (an abbreviation for river written twice) and 'rr' is present in the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for perisher that I've seen before include "source of annoyance" , "pain" , "Nuisance" , "One's dying" , "Little imp" .)