Codicil (noun)

A legal document that amends or supplements a will without revoking it.

Origin:

The word "codicil" comes from the latin "codicillus" meaning "a small writing".

Examples:

1. He added a codicil to his will to include his new grandchild as a beneficiary.
2. The lawyer advised his client to make a codicil to their will to reflect recent changes in the family.
3. The codicil had to be signed and witnessed in the same way as the original will.
4. The codicil was created to change the distribution of assets to a new beneficiary.
5. The codicil should be kept with the original will in a safe place.