"Hmoob" refers to the language of the Hmong
people of Asia, and the word is actually pronounced more like "Hmong."
The "b" in the word modifies the tone of the preceeding "oo" (much like accent marks modify the tone of vowels in French).
The traditional home of the Hmong
ethnic group is in the mountains of Laos as well as parts of China and Vietnam; there is also a large immigrant community in the United States.
On Wells Fargo ATMs in California (and perhaps others as well), the word "Hmoob" is displayed on the first screen along with several other language choices.