To halt one's work or other activity.
To rob.
To defeat.
To have sex with.
To remove, as a discount or estimate.
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 remove by hitting (something, someone)
To kill.
To accomplish hastily.
To quit or cease completely, or to promise to quit, as a bad habit.