Crossword Genius

Where the Welsh don't allow rail transport? (5)

Ross

I believe the answer is:

barry

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

'where the welsh don't allow' is the definition.
The definition suggests a singular noun but the answer is not.

'rail transport?' is the wordplay.
'rail' becomes 'bar' (I've seen this in other clues).
'transport?' becomes 'ry' (abbreviation for railway).
'bar'+'ry'='BARRY'

Can you help me to learn more?

(Other definitions for barry that I've seen before include "-- Island, Welsh resort" , "South Wales town -- boy's name" .)

I've seen this clue in the Evening Standard.
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