Find out about article made of tanned hide once (8)

I believe the answer is:

leathern

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

'of tanned hide once' is the definition.
I can't judge whether this definition defines the answer.

'find out about article' is the wordplay.
'find out' becomes 'learn' (synonyms).
'about' indicates putting letters inside.
'article' becomes 'the' (the definite article in English).
'learn' placed around 'the' is 'LEATHERN'.

'made' is the link.

Can you help me to learn more?

(Another definition for leathern that I've seen is " hide".)

I've seen this clue in The Times.

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