[n] a written explanation or criticism or illustration that is added to a book or other textual material; "he wrote an extended comment on the proposal"
[n] a statement that expresses a personal opinion or belief; "from time to time she contributed a personal comment on his account"
[n] a report (often malicious) about the behavior of other people; "the divorce caused much gossip"
[v] provide interlinear explanations for words or phrases; "He annotated on what his teacher had written"
[v] explain or interpret something
[v] make or write a comment on; "he commented the paper of his colleague"