The spelling of the word "glasco" is uncommon and may cause confusion for English speakers. The phonetic transcription of the word is /ˈɡlæskoʊ/, with stress on the first syllable. This spelling follows the English language's irregular phonetic patterns, where the letter "s" is pronounced as "z" between vowels, as in "glass." The final letter "o" is used to indicate the long vowel sound in the pronunciation. It is essential to use phonetic transcription to ensure correct pronunciation of this word, particularly when it is unfamiliar.