The spelling of the word "Tsimarin" can be explained through the use of IPA phonetic transcription. The word starts with the voiceless alveolar fricative sound represented by "/ts/", followed by the voiceless palato-alveolar affricate sound represented by "/ʃ/", and then the voiced velar nasal sound represented by "/ŋ/". The final vowel sound is represented by the short "a" symbol "/æ/". Therefore, the correct spelling of the word is "Tsimarin" and it is pronounced as /tsɪməˈrɪn/.