What does "laconic" mean?

Laconic: Laconian; characteristic of, or like, the Spartans; hence, stern or severe; cruel; unflinching. His head had now felt the razor, his back the rod; all that laconical discipline pleased him well. Bp. Hall. -- Laconic, Concise. Concise means without irrelevant or superfluous matter; it is the opposite of diffuse. Laconic means concise with the additional quality of pithiness, sometimes of brusqueness.