watercolour
noun [ C or U ] UK (US watercolor) uk/ˈwɔː.təˌkʌl.ər/ us/ˈwɑː.t̬ɚˌkʌl.ɚ/
水彩（颜料）;水彩画
a paint that is mixed with water and used to create pictures, or a picture that has been done with this type of paint
I prefer painting with watercolours. 我更喜欢水彩画。
He has a beautiful collection of watercolours. 他收藏了很多漂亮的水彩画。