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 tell whether this definition defines the answer.

'in leavenworth' is the wordplay.
'in' indicates a hidden word.
'AVE' can be found hidden inside '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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