Dictionary.net

To express one's views as to the merit or demerit of; esp., to animadvert upon; to find fault with; as, to criticise conduct.

To act as a critic; to pass literary or artistic judgment; to play the critic; -- formerly used with on or upon.

To discuss the merits or demerits of a thing or person; esp., to find fault.

To strike with something hard or heavy; to move by striking; to drive (a thing) against something; as, to knock a ball with a bat; to knock the head against a post; to knock a lamp off the table.

To strike with something hard or heavy; to move by striking; to drive (a thing) against something; as, to knock a ball with a bat; to knock the head against a post; to knock a lamp off the table.

To pass judgment on: to censure.

To examine and judge; pass judgment on; censure.