Final answer:
The airport symbol for Lunken on a Cincinnati sectional, with a star on top of the blue circle, indicates that it is a public airport open to the public.
Step-by-step explanation:
The airport symbol for Lunken on a Cincinnati sectional, with a star on top of the blue circle, indicates that it is a public airport. The star symbol represents a public-use airport which means that it is open to the public and offers services and facilities to support general aviation.