Definition of "Cantonese"

Cantonese

/kæn.təˈniːz/

adjective
not comparable
1. Relating to the city of Guangzhou (Canton) or the province of Guangdong.
2. Relating to Cantonese people.
3. Relating to Cantonese language.
4. Relating to Cantonese food/cuisine.
noun
countable and uncountable, plural Cantonese
1. (countable) An inhabitant of Canton; a person of Canton descent.
  Quotations
  The alliance was headed by a mustached Cantonese with a broad face, piercing eyes, and a great sympathy for the poor and downtrodden, a man who reveled in "action at all costs and whatever the risks." This was Sun Yat-sen, a visionary who lacked practical political skills but nonetheless became the hallowed "Father of the Republic" upon his death.
  2000, Stella Dong, Shanghai The Rise and Fall of a Decadent City‎, HarperCollins, page 85
2. (uncountable) A Sinitic language mainly spoken in the south-eastern part of Mainland China, Guangdong (Canton), Hong Kong, Macau, by the Chinese minorities in Southeast Asia and by many overseas Chinese worldwide.
  Quotations
  As a mainland China national, the counter for our trial was fluent in English, Putonghua, and the Sichuan dialect, and was familiar with a number of other major Chinese languages such as Cantonese and Hakka.
  2019, Li Huang, James Lambert, “Another Arrow for the Quiver: A New Methodology for Multilingual Researchers”, in Journal of Multilingual and Multicultural Development, page 10
3. (uncountable) A dialect of the Cantonese language, spoken in Guangzhou (Canton), Hong Kong, Macau, and treated as the standard dialect of the Cantonese language.