comment

n. 1 brief critical or explanatory remark or note; opinion. 2 commenting; criticism (aroused much comment; his art is a comment on society). v. (often foll. By on or that) make (esp. Critical) remarks.  no comment colloq. I decline to answer your question. [latin]

v. i. To make remarks, observations, or criticism; especially, to write notes on the works of an author, with a view to illustrate his meaning, or to explain particular passages; to write annotations; -- often followed by on or upon.