What is the meaning of Knock_off?

Alternative form of knockoff

To halt one's work or other activity.

To kill.

To defeat.

To remove, as a discount or estimate.

To rob.

To make a copy of, as of a design.

To assign (an item) to a bidder at an auction, indicated by knocking on the counter.

To have sex with.

To accomplish hastily.

To remove by hitting (something, someone)

Source: wiktionary.org