Crossword Genius

Regulations of frontiers without opening (6)

Ross

I believe the answer is:

orders

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'regulations' is the definition.
The answer and definition can be both acts as well as being plural nouns.
Perhaps you can see a link between them that I can't see?

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for orders that I've seen before include "Monastic societies" , "Dictates, decrees" , "Groups living under particular religious rules" , "Commands these priests and nuns?" , "Given to soldiers" .)

I've seen this clue in The Telegraph.
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