UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈæbətɪs/US:USA pronunciation: respellingUSA pronunciation: respelling(abə tē′, -tis, ə batē, ə batis)

WordReference Random House Unabridged Dictionary of American English © 2020
ab•a•tis  (abə tē′, -tis, ə batē, ə batis),USA pronunciation n., pl.  ab•a•tis (abə tē′, -tis, ə batē, ə batis),USA pronunciation  ab•a•tis•es 
    (abə tē′, -tis, ə batē, ə batis),USA pronunciation 
  1. an obstacle or barricade of trees with bent or sharpened branches directed toward an enemy.
  2. a barbed wire entanglement used as an obstacle or barricade against an enemy.
  • Vulgar Latin *abatteticius, derivative of Old French abattre (see abate)
  • French; Old French abateis
  • 1760–70

Collins Concise English Dictionary © HarperCollins Publishers::
abatis, abattis /ˈæbətɪs; ˈæbətiː/ n
  1. a rampart of felled trees bound together placed with their branches outwards
  2. a barbed-wire entanglement before a position
Etymology: 18th Century: from French, from abattre to fell

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