The spelling of the word "botelho" can be explained through the use of the International Phonetic Alphabet (IPA). In this phonetic transcription system, "botelho" is spelled as /bo.ˈte.lʊ/. The word starts with the voiced bilabial plosive /b/, followed by the open-mid back unrounded vowel /o/. Next is the voiceless alveolar fricative /t/, then the close-mid front unrounded vowel /e/. The final syllable begins with the voiced alveolar lateral approximant /l/ and ends with the close back unrounded vowel /ʊ/.
The etymology of the word "botelho" can be traced back to the Latin term "botellus" or "botellum", which means a small bottle or flask. This Latin word eventually evolved into "bodhilho" in Old Portuguese, and later, in modern Portuguese, it became "botelho". The term "botelho" refers to a traditional Portuguese sausage made from pork and seasoned with spices.