Evil overthrown, with good getting on top, holding a sword (6)

I believe the answer is:

glaive

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'sword' is the definition.
(thesaurus)

'evil overthrown with good getting on top holding a' is the wordplay.
'overthrown' is a reversal indicator.
'with good' becomes 'g' (abbreviation. I am not sure about the 'with' bit.).
'getting on top' is a charade indicator (letters next to each other) (in a down clue, some letters go on top of others).
'holding' is an insertion indicator.
'evil' backwards is 'live'.
'live' after 'g' is 'glive'.
'glive' enclosing 'a' is 'GLAIVE'.

Can you help me to learn more?

(Another definition for glaive that I've seen is " weapon termed out-dated".)

I've seen this clue in The Guardian.

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