Tucson – Wiktionary

From the Spanish Tucsón [tukˈson], from the O’odham Cuk Ṣon (literally “ [at the base of the] black mountain ”) [tʃʊk ʂɔːn], referring to Sentinel Peak (colloquially known as ‘”A” Mountain’) visible in the west of Tucson’s downtown area. Pronunciation . IPA : /ˈtuːsɒn/ (locally) IPA : /tuːˈsɒn/ Rhymes: -ɒn; Proper noun

https://en.m.wiktionary.org/wiki/Tucson