Leander got her love (4)

I believe the answer is:
hero
Here is my best explanation:
'leander' is the definition.
Both the answer and definition are singular nouns.
Perhaps there's an association between them I don't understand?
'her love' is the wordplay.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'her'+'o'='HERO'
'got' is the link.
Can you help me to learn more?