A short thoroughfare in Leavenworth (3)

I believe the answer is:

ave

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'a short thoroughfare in leavenworth' is the definition.
I can't judge whether this defines the answer.

'in leavenworth' is the wordplay.
'in' indicates the answer is hidden within the clue.
'AVE' is hidden within 'leavenworth'.

Can you help me to learn more?

(Other definitions for ave that I've seen before include "Welcome" , "Cockney's own" , "Hail (Latin)" , "Hail in graveyard." , "Hail as to Caesar" .)

I've seen this clue in the Evening Standard.

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