I note canine is gold – and this? (7)

I believe the answer is:

incisor

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'this?' is the definition.
The definition suggests a singular noun which matches the answer.

'i note canine is gold' is the wordplay.
'note' becomes 'n' (abbreviation).
'canine' becomes 'c' (dental abbreviation).
'gold' becomes 'or' ('or' is the heraldic name for gold).
'i'+'n'+'c'+'is'+'or'='INCISOR'

'and' is the link.

Can you help me to learn more?

(Other definitions for incisor that I've seen before include "Front tooth" , "One takes a bite" , "something with bite" , "carnivore requires?" , "Ivory perhaps" .)

I've seen this clue in The Independent.

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