One roaming in path like a big cat (7)

I believe the answer is:

leonine

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'like a big cat' is the definition.
(I've seen this before)

'one roaming in path' is the wordplay.
'roaming' indicates an anagram.
'in' indicates putting letters inside.
'path' becomes 'line' (I am not sure about this - if you are sure you should believe this answer much more).
'one' with letters rearranged gives 'eon'.
'eon' placed within 'line' is 'LEONINE'.

Can you help me to learn more?

(Other definitions for leonine that I've seen before include "like one with largest share" , "As a maned animal" , "Like the king of the jungle" , "Pope" , "Descriptive of pride" .)

I've seen this clue in The Times.

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