knock off = rob (a place) or steal (something)
- The two teenagers knocked off the shop and left with 200 euros.
- Can you believe they knocked off the supermarket across the street?
- Two armed men just knocked off the local bank.
- Somebody 's knocked off my wallet!
- Somebody 's knocked off my bike!
- They knocked off some DVD players from a van.
- The department store was knocked off yesterday. They knocked off some videos and some cash.