a piece of iron with bent ends for holding together building stones or the like.
Origin of cramp iron
First recorded in 1555–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for cramp iron
Historical Examples of cramp iron
Over each cell a cramp-iron was fixed, wherewith to lock-up the prisoners like ferocious dogs.