Crossword Genius

Ask family insistently for Halloween requirement (7)

Ross

I believe the answer is:

pumpkin

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

'insistently for halloween requirement' is the definition.
I can't judge whether this defines the answer.

'ask family' is the wordplay.
'ask' becomes 'pump' (I can't justify this - if you can you should give a lot more credence to this answer).
'family' becomes 'kin' (synonyms).
'pump'+'kin'='PUMPKIN'

Can you help me to learn more?

(Other definitions for pumpkin that I've seen before include "Large type of gourd" , "Type of squash" , "Big squash" , "coach would appear at midnight" , "Large orange fruit of the squash family" .)

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