The term “Burmese” usually refers to, or technically and simply means, either the people from Burma or the origin language of the Burman ethnic group, or the language commonly spoken by the people of the country.
The country is known as Myanmar in many countries around the world and recognized at the United Nations. However, along with the democratic forces, the West, specifically the US and the UK, does not recognize the legitimacy of the change of name. They therefore officially use “Burma” up to the present. The EU officially uses the name Burma/Myanmar.