concrete. Usually in plural. A criticism, comment, observation, or remark (typically implying censure). Chiefly with on (also upon).

An incidental remark or comment; now always, an adverse criticism.

The action or an instance of criticizing or censuring; criticism, censure; animadversion.

Critical attention or consideration; judgement, censure; animadversion. Also: an instance of this. Now rare.

figurative. A critical examination or dissection of a subject or work.