King, King’s mistress and the sound of fate? (5)
I believe the answer is:
kneel
'the sound of fate?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'king king's mistress' is the wordplay.
'king' becomes 'K' (chess abbreviation).
'king's mistress' becomes 'neel' (I am not sure about this - if you are sure you should believe this answer much more).
'k'+'neel'='KNEEL'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for kneel that I've seen before include "Go down to be knighted" , "Show obeisance" , "Bend one's knees" , "Assume humble posture" , "Rest in prayer" .)