Codicil

Codicil (Lat. codicillus, diminutive of codex), a supplement to a will, whereby anything omitted is added, or any change demanded by the altered circumstances of the testator or the beneficiaries, is effected. A codicil is authenticated in the same manner as a will, and possesses the same privileges when holograph, or written by the hand of the testator himself. See WILL.