Dad's first epitaph for a fool (4)
I believe the answer is:
drip
'a fool' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'dad's first epitaph' is the wordplay.
'dad's first' becomes 'd' (1st letter of 'dad').
'epitaph' becomes 'RIP' (rest in peace).
'd'+'rip'='DRIP'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for drip that I've seen before include "Fall in small drops as from tap" , "Wet - sign of faulty washer" , "Fall in small drops as from wet clothes" , "Fall in small blobs" , "Fall in small amounts" .)