Latin. Little document. A little book: a codicil to a will. n. Small log, writing tablets (pl.), petition to the emperor patent, will codicil. A document instructing an heir to carry out a certain performance.
When additions were made by the Romans to a will, they were called Codicilli, and were, it is said, expressed in the form of a Letter, addressed to the heirs; sometimes also to the trustees, (ad fide commissaries.) After the testator's death, his will was opened in the presence of the witnesses who had sealed it, or a majority of them. And if they were absent or dead, a copy of the will was taken in the presence of other respectable persons; and the authentic testament was laid up in the public archives, that if the copy were lost, another might be token from it.