Laconic.

Chambers's Encyclopaedia, Volume 6: Humber to Malta, p. 475–476

Laconic. The Spartans, or Lacedæmonians (whose country was called Laconia), systematically endeavoured to confine themselves to a sen- tentious brevity in speaking and writing; hence the term laconic has been applied to this style.

Source scan(s): p. 0490, p. 0491