knock off

动词

To remove (something or someone) by applying a strong force. · He was knocked off his bike.· The wave knocked me off my feet.
To remove, as a discount or estimate. (transitive) · They agreed to knock off 20% of the price.
To make a copy of, as of a design. (transitive) · They send people to the shows in Milan for "ideas", which means knocking off the designs they guess would sell.
To assign (an item) to a bidder at an auction, indicated by knocking on the counter. (transitive)
To accomplish hastily. (informal, transitive) · I knocked off a couple of quick sketches before the design meeting.
To halt one's work or other activity. (slang) · I think I'll knock off for the evening and go to bed.
To kill. (slang, transitive) · The mobsters hired the guy to knock off their enemies.
To defeat. (slang, transitive) · The Hammers knocked off Arsenal on the strength of a 78th-minute tally from Jarrod Bowen.

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