The spelling of the word "Eastin" is unique and can be explained using the International Phonetic Alphabet (IPA) transcription. In IPA, "Eastin" is spelled as /ˈiːstɪn/. The first sound corresponds with the vowel sound of "ee" as in "feet", followed by the consonant sound "s", the short vowel sound "i" as in "hit", and the consonant sound "t". The final sound corresponds with the vowel sound of "in" as in "win". Overall, the spelling of "Eastin" reflects its pronunciation accurately.