Primate, one replacing duke in cricket ground (5)
I believe the answer is:
loris
'primate' is the definition.
(I know that loris is a type of primate)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for loris that I've seen before include "Short-tailed mammal" , "Slow-moving nocturnal primate" , "lemur" , "Nocturnal primate of Southeast Asia (usually slender or slow)" , "Small nocturnal primate" .)