Councillor is angry about Southern Network (10)

I believe the answer is:

crisscross

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'network' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

'councillor is angry about southern' is the wordplay.
'councillor' becomes 'cr' (I've seen this in other clues).
'angry' becomes 'cross' (I've seen this before).
'about' means one lot of letters go next to another.
'southern' becomes 's' (abbreviation).
'cross' after 's' is 'scross'.
'cr'+'is'+'scross'='CRISSCROSS'

Can you help me to learn more?

(Another definition for crisscross that I've seen is " American game".)

I've seen this clue in The Independent.

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