The spelling of the word "piskun" is determined by its pronunciation. In IPA phonetic transcription, it is represented as /ˈpɪskən/. The first syllable is pronounced with a short "i" sound, while the second syllable features a schwa sound. The letter "k" is used instead of a "c" to indicate a hard "k" sound. The word "piskun" is also spelled with only one "s," as the "s" sound is already represented by the letter "c."