Crossword Genius

Ate so fast, mouth appeared injured (7)

Ross

I believe the answer is:

gobbled

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

'ate' is the definition.
(gobbling is a kind of eating)

'fast mouth appeared injured' is the wordplay.
I cannot really see how this works, but
'mouth' could be 'gob' (informal term for the mouth) and 'gob' is found in the answer.
The remaining letters 'bled' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).

'so' acts as a link.

Can you help me to learn more?

I've seen this clue in The Times.
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