This is the 9065th most frequent Polish word.
staś
"Staś" is a diminutive of the Polish name "Stanisław," equivalent to "Stan" or "Stanley" in English.
In this sentence, 'Staś' is used as a proper noun, a diminutive form of 'Stanisław,' referring to a person.
Staś uwielbia grać na gitarze.
Staś loves playing the guitar.
Here, 'Staś' is used as a direct address, emphasizing the communication target in the sentence.
Staś, pamiętaj o odrabianiu lekcji.
Staś, remember to do your homework.
In this context, 'Staś' again refers to the person named Staś, indicating him within a statement about his emotional state.