The name Tucson comes via Spanish from the O'odham, Cuk Ṣon (pronounced [ʧʊk ʂɔn]; roughly, "chuk shon"), meaning "Black Base," a reference to the mostly volcanic mountains on the west side Variations in the pronunciation of the city's name are fairly common, as the vowel in the second syllable is often indistinct or omitted altogether (as in /ˈtusn̩/). A comical, intentional mispronunciation of /ˈtʌksn̩/ is also occasionally encountered. The city is often misspelled as "Tuscon" by non-locals, and local residents may pronounce it this way in jest.
if you can make head or tail of that steve...good luck(:)