comment

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A written note intended as an explanation, illustration, or criticism of a passage in a book or other writing; an annotation.
• noun A series of annotations or explanations.
• noun A statement of fact or opinion, especially a remark that expresses a personal reaction or attitude.
• noun An implied conclusion or judgment.
• noun Talk; gossip.
• noun Computers A string of text in a program that does not function in the program itself but is used by the programmer to explain instructions.
• noun Linguistics The part of a sentence that provides new information about the topic.
• intransitive verb To make a comment; remark.
• intransitive verb To serve as a judgmental commentary.
• intransitive verb To make comments on; annotate.

from The Century Dictionary.

• To make remarks or observations, as on an action, an event, a proceeding, or an opinion; especially, to write critical or expository notes on the works of an author.
• To make remarks or notes upon; expound; discuss; annotate.
• noun A spoken or written remark or observation; a remark or note; especially, a written note intended as a criticism, explanation, or expansion of a passage in a book or other writing; annotation; explanation; exposition.
• noun Talk or discourse upon a particular subject; gossip.
• noun Synonyms Annotation, etc. Sec remark, n.
• To feign; devise.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb 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.
• noun A remark, observation, or criticism; gossip; discourse; talk.
• noun A note or observation intended to explain, illustrate, or criticise the meaning of a writing, book, etc.; explanation; annotation; exposition.
• transitive verb Archaic. To comment on.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A spoken remark.
• noun programming A remark in source code which does not affect the behavior of the program.
• verb transitive To remark.
• verb intransitive To make remarks or notes.
• verb software To insert comments into source code.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a report (often malicious) about the behavior of other people
• verb provide interlinear explanations for words or phrases
• noun a written explanation or criticism or illustration that is added to a book or other textual material
• verb explain or interpret something
• verb make or write a comment on
• noun a statement that expresses a personal opinion or belief or adds information