One of the best
Level B1 · Unit 14: Slovenia and the world · Lesson 5: Slovenia and the world: comparisons
Eden izmed (feminine ena izmed) + the genitive plural means "one of":
- Plečnik je eden izmed najbolj znanih arhitektov.
- Garnbret je ena izmed najboljših športnic na svetu.
In speech, izmed is often dropped: eden najboljših.
Practise this in the free course
This explanation comes from Unit 14, Lesson 5 of Slovenim, a free Slovenian course with dialogues, audio and exercises that check your answers.