The spelling of the word "shot bull" can be explained using the International Phonetic Alphabet (IPA). The sound "sh" is represented by the symbol /ʃ/, followed by the vowel sound "o" which is represented by the symbol /ɑ/. The "t" sound is represented by the symbol /t/, and the "b" sound is represented by the symbol /b/. The final "ull" sound is represented by the symbol /ʌl/. So, "shot bull" is spelled as /ʃɑt bʌl/.