abatis
/ˈæbətɪs/(亦作 abattis)
noun
(复同单, 或abatises, abattises)
- historical a defence made of felled trees placed lengthwise over each other with the boughs pointing outwards〈史〉鹿砦。
词源
mid 18th cent.: from French, literally 'felled (trees)', from Old French abatre 'to fell' （see ABATE）.