Snag at home somewhere in Hertfordshire (7)

I believe the answer is:

hitchin

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'home somewhere in hertfordshire' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'snag at' is the wordplay.
'snag' becomes 'hitch' (synonyms).
'at' becomes 'in' (synonymous in some cases - eg at school, in school).
'hitch'+'in'='HITCHIN'

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(Another definition for hitchin that I've seen is " Hertfordshire town".)

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