Definition of brigs:
(n) :
(nautical) A two-masted vessel, square-rigged on both foremast and mainmast
(n) :
(US) A jail or guardhouse, especially in a naval military prison or jail on a ship, navy base, or (in fiction) spacecraft.
(n) :
(Scotland, Northern Ireland, Northern England) Bridge.
(v) :
(US, military slang, dated) To jail, to confine into the guardhouse.
(v) :
(US, military slang, dated) To merely pretend to be occupied, to lollygag.
(n) :
Brigadier.