Crossword Genius

Second Mrs Grundy’s young man? (5)

Ross

I believe the answer is:

sprig

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

'young man?' is the definition.
(I've seen this before)

'second mrs grundy's' is the wordplay.
I cannot really understand how this works, but
'second' could be 's' (common abbreviation) and 's' is located in the answer.
The remaining letters 'prig' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for sprig that I've seen before include "Headless nail; leafy ornament" , "Young family member; small stem" , "Young man" , "Grips with a small branch" , "Purloined" .)

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.