Barrier collision like uninvited guest (4-5)

I believe the answer is:

gate-crash

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'barrier collision like uninvited guest' is the definition.
I can't tell whether this definition defines the answer.

'barrier collision' is the wordplay.
'barrier' becomes 'gate' (gate is a kind of barrier).
'collision' becomes 'crash' (synonyms).
'gate'+'crash'='GATE-CRASH'

Can you help me to learn more?

(Other definitions for gate-crash that I've seen before include "Intrude on private party without invitation" , "Enter (a party) without an invitation" , "Attend private party without invitation" , "Go to party without being invited" , "Arrive uninvited" .)

I've seen this clue in the Sydney Morning Herald.

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