codicil

English Thesaurus

1. a supplement to a will; a testamentary instrument intended to alter an already executed will (noun.communication)

hypernym	:	appendix,
definition	:	supplementary material that is collected and appended at the back of a book (noun.communication)

part meronym	:	testament, will,
definition	:	a legal document declaring a person's wishes regarding the disposal of their property when they die (noun.communication)

domain category	:	jurisprudence, law,
definition	:	the collection of rules imposed by authority (noun.group)