Crossword Genius

Wonk finally given time can nail constituent (7)

Ross

I believe the answer is:

keratin

I'm a little stuck... Click here to teach me more about this clue!

'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" .)

I've seen this clue in The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.