grind up

verb4

1. •
   To reduce (something) to powder by grinding.

   • You have to grind up the cardamom pods.
2. •
   To wear down on (someone); to be extremely draining or stressful; to cause burnout.

   • This place will grind you up.
3. •
   To dance in a sexually suggestive manner close to another person.

   • He's been grinding up on her.
4. •
   To skateboard on a surface or in a location.

   • He's grinding up the skate park.