This is the 872nd most frequent Czech word.
umí
"Umí" means "can" or "knows how to" in English.
In this sentence, 'umí' is used to indicate the ability or skill to perform an action.
Marta umí hrát na klavír.
Marta knows how to play the piano.
Here, 'umí' refers to the capability or knowledge person possesses to perform the particular action described.
Kdo umí odpovědět na tuto otázku?
Who knows how to answer this question?
In this context, 'umí' expresses the developed skill or innate ability of the dog to perform the action stated.