Trou-de-loup
Pronunciation : Trou"-de-loup"
Part of Speech : n.;
Etymology : [F. trou hole + de of + loup wolf.] (Mil.)
Definition : Defn: 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.
pl. Trous-de-loup(
Source : Webster's Unabridged Dictionary, 1913