The spelling of the word "Leighland" represents a common phenomenon in English where the same sound can be written with different letters. In this case, the "ai" diphthong represents the long "a" sound in "Leigh" and the silent "gh" at the end of the word is a remnant of Old English spelling and has no sound. Transcribed phonetically as /liːlənd/, the word's pronunciation reflects the diversity and complexity of the English language.