I repeat: I have a large bill! (4)

I believe the answer is:

ibis

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'i have a large bill' is the definition.
I can't tell whether this defines the answer.

'i repeat' is the wordplay.
'repeat' becomes 'bis' (musical direction meaning to play a second time).
'i'+'bis'='IBIS'

Can you help me to learn more?

(Other definitions for ibis that I've seen before include "Glossy wading bird" , "Bird venerated by ancient Egyptians" , "Near-colourless mineral" , "Large wader" , "leggy bird" .)

I've seen this clue in The Times.

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