* A misspelling of "laconic," which means using very few words, concise and to the point.
* A proper noun, referring to a place, person, or thing. There are several places named Lacona, including a town in New York, a village in Italy, and a lake in Switzerland.
* A brand name or product name. There are businesses and products with this name, so it's possible you're thinking of something specific.
To understand what "lacona" means, you need more context. Please provide more information, such as the sentence it was used in or the situation where you encountered it.