#erinaceus
- Hedgehog — A small insectivorous mammal (Erinaceus europaeus) with a pointed snout and its back covered with long, rigid spines, which rolls into a ball when endangered as a structural self-defense mechanism. In a technical or military sense, the term denotes a defensive obstacle made of crossed beams (Czech hedgehog) used as an anti-tank barrier, an industrial part equipped with protruding teeth, or a stiff cylindrical brush used for cleaning chimneys.