Definify.com
Webster 1913 Edition
Abattis
{
Ab′a-tis
,Aba′t-tis
, }(ăb′ȧ-tĭs; French ȧˊbȧˊtē′)
Noun.
(Fort.)
A means of defense formed by felled trees, the ends of whose branches are sharpened and directed outwards, or against the enemy.
Webster 1828 Edition
Abattis
AB'ATTIS
,Noun.