Polish aluminium ring — for its nose? (7)

I believe the answer is:

buffalo

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'its nose?' is the definition.
I can't tell whether this defines the answer.

'polish aluminium ring' is the wordplay.
'polish' becomes 'buff' (buffing is a kind of polishing).
'aluminium' becomes 'al' (chemical symbol).
'ring' becomes 'O' (O is the shape of a ring).
'buff'+'al'+'o'='BUFFALO'

'for' is the link.

Can you help me to learn more?

(Other definitions for buffalo that I've seen before include "Kind of cattle" , "Wild ox or bison" , "Brown bison of North American plains" , "Large, shaggy, brown bison" , "Large bovine animal" .)

I've seen this clue in The Times.

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