apretar

verb

1. transitive to squeeze
2. transitive to tighten, constrict or compress
3. transitive to press (e.g., a button)
4. transitive to pull (e.g., the trigger)
5. transitive to grit (e.g., one's teeth), to clench (e.g., one's fist)
6. transitive to push down (e.g., a toilet plunger)
7. transitive to hold back
8. transitive to hold on to (something)
9. intransitive to intensify
10. colloquial to start (an action)