1 large watertight box or chamber in which men can work under water (eg when building foundations) 沉箱（工人进行水下作业, 如建底座时所乘的大潜水箱）.
2 large box (usu on wheels) in which ammunition is carried 弹药箱; （通常为）弹药车.
1600-1700; Language: French;Origin:
, from Latin
a large box filled with air, that people go into to work under water, for example when building bridges
a large box for carrying ammunition