A small mammal, of the subfamily Erinaceinae, characterized by its spiny back and by its habit of rolling itself into a ball when attacked.
A type of moveable military barricade made from crossed logs or steel bars, laced with barbed wire, used to damage or impede tanks and vehicles; Czech hedgehog.
The nickname for a spigotmortar-type of depth charge weapon from World War II that simultaneously fires a number of explosives into the water to create a pattern of underwater explosions intended to attack submerged submarines.
(Australia) A type of chocolate cake (or slice), somewhat similar to an American brownie.
1868, "Dredging," article in Charles Tomlinson (editor), Cyclopædia of Useful Arts, Mechanical and Chemical, Manufactures, Mining, and Engineering, Volume 1, page 520,The first machines merely loosened, but did not raise the stuff, a scouring being afterwards effected by means of sluices. These machines consisted of large bars or prongs placed vertically in a frame, and being fastened to a barge placed in the line of the sluices, the whole was inpelled forward by the current, thereby scouring the bed. Such a machine, called a hedgehog, is still used in Lincolnshire.
