Wonk finally given time can nail constituent (7)
I believe the answer is:
keratin
'nail constituent' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'wonk finally given time can' is the wordplay.
'finally' says to take the final letters.
'given time' becomes 'era' (an era is a period of time. I am not sure about the 'given' bit.).
'can' becomes 'tin' (both are metal containers).
The final letter of 'wonk' is 'k'.
'k'+'era'+'tin'='KERATIN'
Can you help me to learn more?
(Other definitions for keratin that I've seen before include "Protein found in hair and nails" , "Constituent of hair/nails" , "Rate ink (anag) - fibrous protein" , "Material in hooves and nails" , "Hair, nails substance" .)