Abatis
Pronunciation : Ab"a*tis
Part of Speech : Aba"t*tis
Etymology : [F. abatis, abattis, mass of things beaten or cut down, fr. abattre. See Abate.] (Fort.)
Definition : Defn: A means of defense formed by felled trees, the ends of whose branches are sharpened and directed outwards, or against the enemy.
Source : Webster's Unabridged Dictionary, 1913