Public (5)
'public' is the definition.
(both can mean well-known or unconcealed)
This is the entire clue.
(Other definitions for overt that I've seen before include "____ is able to be seen" , "Open and candid" , "Done or shown openly" , "Plain to see - manifest" , "Done in an obvious way" .)
'public' is the definition.
(associated in meaning)
This is the entire clue.
(Other definitions for open that I've seen before include "Affording access" , "Plain" , "Uncovered" , "Not secret or hidden" , "Frank, candid" .)