The word "pirtle" is an uncommon word with an interesting spelling. It is pronounced as /ˈpɜː.tl̩/, with the stressed syllable being the first one. The IPA phonetic transcription shows that the sound "er" is represented by /ɜː/ and the "t" is followed by the silent "l," which is represented by /l̩/. The etymology of this word is uncertain, and it is mostly used in certain dialects of English. Its pronunciation can vary across different regions, but the spelling remains the same.