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 work slowly by strictly following all work rules, usually in a work-to-rule job action, as part of unionized labor protest.