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Webster 1913 Edition
Trou-de-loup
‖
Trou′-de-loup′
,Noun.
pl.
Trous-de-loup
. [F.
trou
hole + de
of + loup
wolf.] (Mil.)
A pit in the form of an inverted cone or pyramid, constructed as an obstacle to the approach of an enemy, and having a pointed stake in the middle. The pits are called also
trapholes
.