(n) :Aboard a ship, either of the two short two-hour watches that take place between 4 p.m. and 8 p.m; a nightshift, or other very late or early period of duty
(n) :Aboard a ship, either of the two short two-hour watches that take place between 4 p.m. and 8 p.m; a nightshift, or other very late or early period of duty