1. to open, open up (transitive, intransitive, reflexive)

2. to unlock (transitive)

3. to turn on (transitive)

4. to start, open, open up, set up (a business, restaurant, etc.) (transitive)

5. to crack, crack open, to pop (e.g., a safe, a bottle, a coconut) (transitive)

6. to break, break open, (new ground, a game, etc.); to break out (e.g., champagne); to breach (transitive)

7. to spread (one's legs, arms, fingers) (transitive)

8. to answer (the door) (transitive, figurative, figuratively)

9. to open up (to become communicative) (pronominal)

10. to leave, go away (reflexive, slang)

11. to withdraw, back out of (Latin America, reflexive)