A nursery fighter? (10)

I believe the answer is:

toysoldier

I'm a little stuck... Click here to teach me more about this clue!

'a nursery fighter?' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'nursery fighter?' is the wordplay.
'nursery' becomes 'toy' (I can't explain this - if you can you should believe this answer much more).
'fighter?' becomes 'soldier' (soldiers fight in wars).
'toy'+'soldier'='TOYSOLDIER'

Can you help me to learn more?

I've seen this clue in The Irish News.

Want a hint initially instead of a full solution? Install my app