Placenames for Burma are provided by the US Government National Geospatial Intelligence Agency GEOnet Names Server, a list derived from Russian topographic maps, lists received from NGOs, and other sources. (aaas.org)
The code then queries the Geonames database to get an English placename. (safaribooksonline.com)
[7] William Bright says the name comes from the Alsea placename yáx̣ayky (IPA: / ˈjaχajkʲ /). (en.wikipedia.org)