This is the 286th most frequent Slovak word.
jednom
"Jednom" means "one" (locative singular form) in English.
Here, 'jednom' is used in locative case to describe a single, particular artist that the exhibitions are about.
Chodíme na výstavy o jednom umelcovi.
We attend exhibitions about one artist.
In this sentence, 'jednom' serves as a numeral in the locative case specifying a single film from among the best.
Rozprávali sme sa o jednom z najlepších filmov.
We talked about one of the best movies.
The word 'jednom' is used as a numeral in locative case to denote 'one' referring to the noun 'table' described in its locative case.