Witam.
Grind for sth is a commonly used word in slang. It means working out / working hard for sth. When we say "I'm grinding for you" it means:
Haruje dla Ciebie / Poświęcam się dla Ciebie.
Fun facts:
- The word grind is often used in RAP lyrics and game communities.
- Word grind in Polish slang means "harówka"
Pozdrawiam,
Antek