Cruel rant at cruel master's punishment (6)
I believe the answer is:
rattan
'cruel master's punishment' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'cruel rant at' is the wordplay.
'cruel' indicates anagramming the letters.
'rant'+'at'='rantat'
'rantat' is an anagram of 'RATTAN'.
Can you help me to learn more?
(Other definitions for rattan that I've seen before include "Furniture-maker" , "Wickerwork material" , "Palm tree with pliable stems used for furniture" , "A form of cane" , "Palm stems used to make furniture" .)