Crossword Genius

Advocates having protective rails across street (10)

Ross

I believe the answer is:

barristers

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

'advocates' is the definition.
The definition and answer can be both people as well as being plural nouns.
Maybe they are linked in a way I don't understand?

'protective rails across street' is the wordplay.
'protective rails' becomes 'barriers' (I can't justify this - if you can you should believe this answer much more).
'across' is an insertion indicator.
'street' becomes 'st'.
'barriers' placed around 'st' is 'BARRISTERS'.

'having' acts as a link.

Can you help me to learn more?

(Other definitions for barristers that I've seen before include "Lawyers" , "they stand up in court?" .)

I've seen this clue in The Telegraph.
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