Crossword Genius

Pop back again (3)

Ross

I believe the answer is:

dad

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

This clue might be a double definition.

'pop' is the first definition.
(synonyms)

'back again' is the second definition.
The answer and definition can be both people as well as being singular nouns.
Maybe there's a link between them I don't understand?

Can you help me to learn more?

(Other definitions for dad that I've seen before include "Popular father - a palindrome" , "Papa" , "Father, in short" , "Pa" , "Mum's mate" .)

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