name · noun · 6 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
A gentle incline.
A gentle incline in front of a fortification which protects it from cannon fire and exposes attackers to more effective return fire from defenders.
Definition source: English Wiktionary via Wiktextract
Usage: also, figuratively
Topics: architecture, government, military, politics, war
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: talus
Antonyms: none provided
5
noun
Meaning 5
A gentle incline.
In full glacis plate: the angled armour plate on the front of a tank which protects it from projectiles; also (often nautical), such a plate protecting an opening (for example, on a ship).
Definition source: English Wiktionary via Wiktextract
Topics: government, military, politics, war
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
A gentle incline.
A device for sorting mail which slides parcels across a sloped surface.
Definition source: English Wiktionary via Wiktextract
Qualifier: postal
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
Borrowed from French glacis (“slippery surface”), derived from Old French glacier (“to glide; freeze”), the former from Latin glaciāre (“to freeze”), from glaciēs (“ice”), of uncertain origin. Cognates * Medieval Latin glatia (“incline in front of a fortification”)
Across languages
Translations
50 source translations are retained for this English entry.