Blow is a versatile English word with multiple meanings:
1. As a verb: to produce an air current ("The wind blows")
2. To explode ("The bomb might blow")
3. Slang for leaving abruptly ("Let's blow this joint")
4. Informal term for cocaine ("He got caught with blow")
5. To spend money recklessly ("He blew his savings")
6. To fail an opportunity ("She blew her chance")