Meaning ofbreastworkin English

Noun

1. a defensive wall (breast-high); barrier
   The soldiers built a breastwork to protect themselves from enemy fire.
2. a wall or rail (along a deck)
   The ship had a breastwork along its deck to prevent crew members from falling overboard.
3. nautical railing (quarter-deck, forecastle)
   The navy vessel was equipped with a breastwork on the quarter-deck for added safety.