Crossword Genius

Difficult to ignore Yankee in Dacorum town (5)

Ross

I believe the answer is:

tring

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

'town' is the definition.
(I've seen this before)

'difficult to ignore yankee in dacorum' is the wordplay.
I cannot quite understand how this works, but
'in' is within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for tring that I've seen before include "town in Herts" , "Hertfordshire town" .)

I've seen this clue in The Times.
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