oštrina

1. (of a blade) sharpness
   Proveri oštrinu noža pre nego što sečeš meso. — Check how sharp the knife is before you cut the meat.
2. (of sight, image, mind) acuity; sharpness; clarity
   Oštrina vida mu je oslabila s godinama. — His visual acuity has weakened with age.
   Podesi oštrinu slike na televizoru. — Adjust the picture sharpness on the TV.
3. (of words, tone) harshness; severity
   Iznenadila me je oštrina njegove kritike. — I was surprised by the harshness of his criticism.