My mom's friend--60ish--went on a trip to the American Southwest and exclaimed, "It's so weird, they have all these places with 'butt' in the name!" People in the Southwest probably get that a lot.
FTR, the word is "butte" as in Butte, Montana or Red Butte or Elephant Butte. It's pronounced byoot, like if you were saying "beautiful" but just used the first syllable. It's a geographic feature, one of those iconic straight-sided, flat-topped hills they have in the American West and Southwest. Personally I would expect an adult American to have picked up on that by now, from the movies if nothing else.
Further to this topic -- I must really have far too much time on my hands. Have conceived of a bit of tri-national wordplay, as follows.
I understand that in Australian slang, the first syllable of the word "beautiful" is used as an adjective meaning -- well -- "beautiful", or at any rate, something to be approved of.
A member of the Scottish nobility, is the Marquess of Bute (pronounced as above, "byoot"), whose lands include the island of Bute, located to the west of Glasgow; reputedly a very pretty place.
A scenario is envisaged, of a traveller who has spent time in Australia, and the West of the USA, being a guest of the Marquess, and being shown by him, around the eponymous island. They arrive at the base of a picturesque straight-sided, flat-topped hill. The visitor remarks: "Hey, that's a beaut Bute butte, Bute !"