(politics, law) Input given by the public to governmental (or rarely other) bodies, about proposed legislation or regulation(s), during a period—and by means—set aside and prescribed by law.

(law) A process of rulemaking in which a proposed rule is published in the Federal Register and is subject to comment by members of the general public.

Alternative form of color commentator

plural of sidebar comment

(chiefly US, law) An unnecessary, often argumentative remark made by an attorney or witness during a trial or deposition.

(programming, transitive) To disable a section of source code by converting it into a comment.

(US, sports) At a sporting event, a member of the radio or television announcing team who assists a play-by-play announcer. Provides insight into strategy, player performance, background information, etc., and often light humor.

(programming) A comment in source code that occupies several consecutive lines.

(sports, humorous) The supposed propensity of a player to blunder after having their talents pointed out by the commentator.

(dated, fandom slang) Correspondence, usually a letter, sent to a periodical commenting on either the contents of a previous issue or an earlier letter of comment.