(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.

(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.

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

plural of letter of comment

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

Alternative form of color commentator

(programming) A comment in source code that can be interpreted as a directive by some systems, but is ignored by those others that are not aware of the convention; formerly used to overcome compatibility issues between web browsers.

plural of conditional comment

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