The word "rushin" is not a correct spelling in Standard English. However, it may be a variant of the word "Russian" pronounced with a regional dialect or accent. In IPA phonetic transcription, "Russian" is pronounced as /ˈrʌʃən/. The /ʃ/ sound is represented by the "sh" digraph in English, while the unstressed syllable "-ian" is pronounced as /ən/. Therefore, the incorrect spelling "rushin" likely stems from the mispronunciation of "Russian" with a non-standard accent or dialect.