transferred and figurative.
Fortification. A screen to protect people engaged in construction, or to conceal a battery, etc. Also: a casemated redoubt serving as a counterguard…
Subcategories:
— shield to protect gunners (6)
— shelter for observing firing (1)
— pits (3)
— air-raid shelter (9)
— other shelters (6)
— heap of stones as screen (1)
— wattled frame for defence or access (1)
— gabions or fascines (20)
— sandbag (3)
— smoke-screen (1)
— camouflage (1)