Unique feature of the common lynx (4)

I believe the answer is:

only

'unique' is the definition.
(synonyms)

'feature of the common lynx' is the wordplay.
'feature of' indicates a hidden word.
'ONLY' is hidden within 'common lynx'.

(Other definitions for only that I've seen before include "Siblingless (child)" , "Solely, lone" , "Simply" , "Alone; solitary" , "And no one else" .)

I've seen this clue in The Globe and Mail.

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