A series of comments or annotations; especially, a book of explanations or expositions on the whole or a part of some other work.
This letter . . . was published by him with a severe commentary. -Henry Hallam.
A brief account of transactions or events written hastily, as if for a memorandum; -- usually in the plural; as, Caesar's Commentaries on the Gallic War.
An oral description of an event, especially broadcast by television or radio, as it occurs.