tocar

1. to touch, to finger, to feel (tactually)
2. to start addressing (a particular subject or issue)
3. to play (a musical instrument)
4. to sound, jingle, to honk, to ring (a bell, alarm, horn or similar object)
5. (Brazil,informal) to kick out, to expulse
6. (Brazil,informal) to become aware; to realize or perceive something