It actually is a word.

Noun 1. cynosure - something that provides guidance (as Polaris guides mariners); "let faith be your cynosure to walk by"
counseling, counselling, guidance, counsel, direction - something that provides direction or advice as to a decision or course of action
2. cynosure - something that strongly attracts attention and admiration; "if he was the cynosure of all eyes he didn't notice"
center of attention, centre of attention, center, centre - the object upon which interest and attention focuses; "his stories made him the center of the party"