Crossword Genius

What Barnet may mean to a cockney (3)

Ross

I believe the answer is:

air

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

'cockney' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for air that I've seen before include "Cause of inflation" , "Region above the ground" , "Sky" , "Skye Boat Song, perhaps" , "Atmosphere, manner" .)

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