The word "番禺区" is formed by appending the character 区, meaning "district" as an administrative division, to the existing place name 番禺, which is a historical name for the area derived from ancient geographical terminology.
Word Definition - 番禺区
pān yú qūPanyu District of Guangzhou City 廣州市|广州市[guǎng zhōu shì], Guangdong