so called from their resemblance to the horns of a stag
(Varr. L. L.
5.117), were branches of trees interlaced with
their points projecting, used in war as palisading or chevaux-de-frise,
in front of or upon earthworks or fortifications
(Caes. Gal. 7.72
; Liv. 44.11
; Serv. ad
Verg. Ecl. 2.29
; Tib. 4.1, 84), and
sometimes, where there were no fortifications, stuck simply in the level
ground (Sil. It. 10.413, 414).