The spelling of the word "pontillo" is relatively straightforward. In IPA phonetic transcription, it is spelled as /pɑntiːloʊ/. The first sound is a 'p' sound, followed by an 'ah' sound, then an 'n,' a 't,' an 'ee' sound, an 'l,' and finally an 'oh' sound at the end. The double 'l' in "pontillo" is pronounced as a single 'l' sound. Overall, the pronunciation of "pontillo" follows basic English phonetic rules and can be easily understood by most native English speakers.