cynosure
Concise Oxford English Dictionary © 2008 Oxford University Press:
cynosure /ˈsɪnəzjʊə, ˈsʌɪn-, -sjʊə/
▶noun a person or thing that is the centre of attention or admiration.
– origin C16 (orig. denoting the constellation Ursa Minor, or the Pole Star which it contains): from Fr., or from L. cynosura, from Gk kunosoura ‘dog's tail’ (also ‘Ursa Minor’).
'cynosure' also found in these Oxford entries:

