Besides, moreover (4)

I believe the answer is:

also

This clue is a double definition.

'besides' is the first definition.
(I've seen this before)

'moreover' is the second definition.
(synonyms)

(Other definitions for also that I've seen before include "revolutionary a part for Yugoslavia" , "As well, in addition" , "Item" , "'Besides, moreover (4)'" , "Plus" .)

I've seen this clue in The Irish Times.

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