Caltrap, written also Calthrop, and Galtrap, and by French heralds Chausse-trap, is an abbreviated form of Cheval-trap: in instrument thrown upon the ground to injure feet of horses, consisting of four iron spikes, one of which is ever uppermost.
Argent, three cheval-traps sable--TRAP, Glouc.
Azure, a cross between four caltraps or--WESTFALING, Bp. of Hereford, 1586-1603.
Vert, on a lion rampant or caltraps sable--LIGHTORLES.