This is the 763rd most frequent Czech word.
pokus
Attempt; experiment; trial.
Noun (pokus) used to mean 'experiment'.
Jeho vědecký pokus byl úspěšný.
His scientific experiment was successful.
Noun (pokus) used to mean 'attempt' or 'endeavor'.
To byl zoufalý pokus o vysvětlení.
That was a desperate attempt at an explanation.
Verb (pokusím) derived from 'pokus', meaning 'to try' or 'to attempt'.