A testamentary document which is signed in the same way as a Will A codicil supplements the terms of an existing Will, either by adding to it, amending it or revoking part of it
An amendment or supplement to a will It must be executed with all the legal formalities of the will itself
A supplement or an addition to a will, executed with the same formalities as a will, that normally does not revoke the entire will
An amendment to a will, made in a separate instrument and with the same formalities as the Will itself
An amendment changing the terms of an existing valid Will It must be signed and witnesses with the same formality as your Will
A supplement to a will, that adds to, subtracts from, qualifies, modifies, or revokes the provisions of a prior (existing) will
A change to an existing will A supplement, amendment, or addition to a will that explains, modifies, adds to, subtracts from, qualifies, alters, restrains or revokes provisions in a will It becomes a part of the will and must be executed in the same manner as the will, as prescribed by state law
A codicil is an instruction that is added to a will after the main part of it has been written. a document making a change or addition to a will (=a legal document saying who you want your money and property to go to when you die) (codicillus, from codex; CODEX)