1. 1. A written note intended as an explanation, illustration, or criticism of a passage in a book or other writing; an annotation.
   2. A series of annotations or explanations.
   3. A statement of fact or opinion, especially a remark that expresses a personal reaction or attitude.
   4. An implied conclusion or judgment: a novel that is a comment on contemporary lawlessness.
2. 1. A statement of fact or opinion, especially a remark that expresses a personal reaction or attitude.
   2. An implied conclusion or judgment: a novel that is a comment on contemporary lawlessness.
3. Talk; gossip: a divorce that caused much comment.
4. Computer Science A string of text in a program that does not function in the program itself but is used by the programmer to explain instructions.
5. Linguistics The part of a sentence that provides new information about the topic. Also called rheme.

1. To make a comment; remark.
2. To serve as a judgmental commentary: "Her demise comments on [the Upper East Side's] entire way of life" (Mark Muro).

Synonyms: These nouns denote an expression of fact, opinion, or explanation: made an unpleasant comment about my friend; a casual observation about the movie; an offensive personal remark.