1. phrasal verb To knock off an amount from a price, time, or level means to reduce it by that amount. [V n P n] ⇒ Udinese have knocked 10% off admission prices. [V amount P n] ⇒ He has knocked 10 seconds off the world record. [V P amount] ⇒ When pressed they knock off 10 per cent. 2. phrasal verb If you knock something off a list or document, you remove it. [V n P n] ⇒ Tighter rules for benefit entitlement have knocked many people off the unemployment register. [Also V n P] 3. phrasal verb
If someone knocks something off, they steal it. [British, informal] [V P n (not pron)] ⇒ Cars can be stolen almost as easily as knocking off a bike. [Also V n P]
4. phrasal verb To knock off a house, factory, or shop means to break into it and steal money or property. [mainly British, informal] [V P n] ⇒ ...two nervous teenagers knocking off a café. 5. phrasal verb
When you knock off, you finish work at the end of the day or before a break. [informal] [V P] ⇒ If I get this report finished I'll knock off early. [V P] ⇒ What time do you knock off?
6. phrasal verb → knock
If someone knocks someone else off, they kill them. [informal] bump off [V P n (not pron)] ⇒ He had many motives for wanting to knock off Yvonne. [V n P] ⇒ People don't just knock one another off like this unless there's big money at stake.
COBUILD Advanced English Dictionary. Copyright © Harper Collins Publishers