Legal Definition of apostille
1 archaic : a marginal note
2 : a document used in international law that is issued by a government in accordance with the Hague Convention and that certifies that another document has been signed by a notary public
Origin and Etymology of apostille
Middle French, from apostiller to add notes, ultimately from Medieval Latin postilla note, probably from post illa (verba textus) after those (words of the text)
Seen and Heard
What made you want to look up apostille? Please tell us where you read or heard it (including the quote, if possible).