1. (n.) A series of comments or annotations; a book of explanations or expositions\ on the whole or a part of the Scriptures or of some other work.

2. (n.) A brief account of transactions or events written hastily, as if for a memorandum; -- usually in the plural; as, Caesar's Commentaries on the Gallic War.

affix allonge analysis annotation apparatus criticus appendix coda codicil comment commentation critical review criticism critique editorial enclitic envoi epilogue exegesis footnote gloss infix interlineation interpolation leader leading article marginalia notation note note of explanation notice obiter dictum observation postscript prefix proclitic remark report review rider running commentary scholia scholium suffix tail word of explanation write-up