'Breastwork' definitions:

Definition of 'breastwork'

(from WordNet)
noun
Fortification consisting of a low wall [syn: parapet, breastwork]

Definition of 'Breastwork'

From: GCIDE
  • Breastwork \Breast"work`\ (br[e^]st"w[^u]rk`), n.
  • 1. (Fort.) A defensive work of moderate height, hastily thrown up, of earth or other material. [1913 Webster]
  • 2. (Naut.) A railing on the quarter-deck and forecastle. [1913 Webster]