The word "challie" is a Scottish term that refers to a type of hardy fabric used in traditional Highland dress. The spelling of this word might seem a bit unusual, but it can be explained using the International Phonetic Alphabet (IPA) transcription system. The "ch" sound is pronounced like a voiceless velar fricative, like in the word "loch". The "a" sound is pronounced like a short "a" sound, as in "cat". The second "l" sound is pronounced like a typical English "l" sound, and the final "ie" is pronounced like a long "e" sound.