The word "Liquor Cotunnii" is a Latin phrase that refers to a type of liquor made from the bark of the cinchona tree. The spelling of this word can be explained using the International Phonetic Alphabet (IPA) transcription system. "Liquor" is pronounced as /ˈlɪkə/ with stress on the first syllable, while "Cotunnii" is pronounced as /kəˈtʌni/ with stress on the second syllable. The double N in "Cotunnii" indicates that the sound should be pronounced as a nasal with a longer duration than a single N.