Where does the word “laconic” come from and What does laconic mean?

Spartan youths were all trained with the utmost rigor.

But in addition to the activity, vigilance, endurance, and cunning which were practiced in all the land, those dwelling within the province of Laconia were also taught modesty of deportment and conciseness of speech.

The Laconians thus became so noteworthy for their short and pithy way of speaking and writing that such a style became characterized as laconic, from the land where it was the native practice.