Dismiss Labour's angry outburst (9)

I believe the answer is:

fireworks

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

'dismiss labour's angry outburst' is the definition.
I can't judge whether this definition defines the answer.

'dismiss labour's' is the wordplay.
'dismiss' becomes 'fire' (synonyms).
'labour's' becomes 'work's'.
'fire'+'works'='FIREWORKS'

Can you help me to learn more?

(Other definitions for fireworks that I've seen before include "rockets, perhaps" , "Pyrotechnics" , "Display on November 5th etc" .)

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