Makibishi

A Makibishi, (lit. "Disperse diamond (shape), rhombus"), is the Japanese term for a Caltrop.

Makibishi, (a.k.a. igadama), sharp spiked objects that were used in feudal Japan to slow down pursuers and also were used in the defense of samurai fortifications. Makibashi were one of the items supposedly used by ninja. Iron makibishi were called "tetsubishi" while the makibishi made from the dried seed pod of the water chestnut formed a natural type of makibashi called "tennenbishi". Both types of makibishi could penetrate the thin soles of the shoes such as the waraji sandals that were commonly worn in feudal Japan when the makibashi was dropped on the ground or planted in advance. Makibishi could be carried in a bag attached to a belt along with other commonly carried weapons and/or tools such as shuriken and kaginawa. Makibashi could be thrown like a shuriken and could also be used against a enemy on horseback.

Trivia

 * In the 2012 series, in Panic in the Sewers, the Turtles, (Raphael and Donatello), are seen using Makibishi to puncture the tires of a truck driven by Fong, who was holding April captive on Dogpound's orders.