trou-de-loup

== English == === Alternative forms === troup de loup === Etymology === French, literally "wolf-hole". === Noun === trou-de-loup (plural trous-de-loup) (military, historical) 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. ==== Synonyms ==== tiger pit traphole === References === “trou-de-loup”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.