Practical about boxer given something to chase endlessly (9)
I believe the answer is:
realistic
'practical' is the definition.
(associated in meaning)
'boxer given something to chase endlessly' is the wordplay.
I cannot quite see how this works, but
'boxer' could be 'ali' (Muhammad Ali) and 'ali' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'about' acts as a link.
Can you help me to learn more?
(Other definitions for realistic that I've seen before include "Objective" , "Down-to-earth" , "It is clear (anag)" , "Practical; true to life" , "Facing facts, as it is clear" .)