glacis
Definition
Noun: - Military fortification: A "glacis" is a gentle, sloping bank of earth or stone constructed in front of a fortification, such as a bastion or fortress. Its purpose is to expose attacking forces to defensive fire while protecting the fort's base from direct assault.
Usage Examples
- (A sloping embankment in front of a fortress to hinder attackers.)
- (The sloping defensive earthwork was hidden by vegetation.)
Advanced Usage
In military engineering: The term "glacis" is often used in the context of 17th- to 19th-century fortifications, where it formed part of the outer defenses.
- The glacis extended from the parapet to the outer ditch, creating a clear field of fire. (The sloping bank provided an unobstructed line of sight for defenders.)
In modern contexts: "Glacis" can also refer to any sloping surface designed to deflect or protect, such as in tank armor design.
- The tank's glacis plate was angled to deflect incoming projectiles. (The sloped front armor of the vehicle.)
Variants and Related Words
- Glacial (adj): relating to ice or glaciers; extremely cold.
- The glacial winds made the fortress even more forbidding. (Very cold winds.)
- Glaciate (verb): to cover with ice or glaciers.
- The region was glaciated during the last ice age. (Covered by glaciers.)
Synonyms
- Slope: an inclined surface or embankment.
- Ramp: a sloping surface connecting two different levels.
- Embankment: a raised structure of earth or stone, often used for defense.
Related Idioms
- (No common idioms directly using "glacis"; the term is primarily technical and military.)