Played out, even round river (5)
I believe the answer is:
tired
'played out' is the definition.
('tired' can be similar in meaning to 'played out')
'even round river' is the wordplay.
'even round' becomes 'ti' (I am not sure about this - if you are sure you should believe this answer much more).
'river' becomes 'red' (Red is an example).
'ti'+'red'='TIRED'
Can you help me to learn more?
(Other definitions for tired that I've seen before include "Weary or fed up" , "getting bored" , "Sleepy" , "In need of rest" , "Beat" .)