European capital initially involved in urchin’s discharge (10)

I believe the answer is:

bratislava

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'european capital' is the definition.
(capital of Slovakia)

'initially involved in urchin's discharge' is the wordplay.
'initially' becomes 'i' (this could be a standard abbreviation I've not previously seen).
'involved in' is an insertion indicator.
'urchin's' becomes 'brat's' (both can mean a child).
'discharge' becomes 'lava' (lava is discharged from a volcano).
'i' going within 'brats' is 'bratis'.
'bratis'+'lava'='BRATISLAVA'

Can you help me to learn more?

(Other definitions for bratislava that I've seen before include "City" , "Slovakian capital" , "Capital of the Slovak Republic" , "Capital of Slovakia" .)

I've seen this clue in The Times.

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