Meaning of spirit off

1. The runners were determined to spirit off as soon as the starting gun fired.
2. The magician was able to spirit off the coin without anyone noticing.
3. The children tried to spirit off some cookies from the kitchen before dinner.
4. The thief was able to spirit off the valuable painting from the museum without being caught.
5. She quickly tried to spirit off the evidence before anyone saw.
6. The spy managed to spirit off the top-secret documents without being detected.
7. The cat would often spirit off small toys and hide them under the couch.
8. The pickpocket was skilled at spiriting off wallets in crowded places.
9. The students decided to spirit off early from the boring lecture.
10. The bandit attempted to spirit off the jewels from the safe, but was caught in the act.