Crossword Genius

Gushed out and one ran to stifle it (7)

Ross

I believe the answer is:

spouted

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'gushed' is the definition.
('spout' can be a synonym of 'gush')

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Another definition for spouted that I've seen is " Declaimed".)

I've seen this clue in the Evening Standard.
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