watercolouring1
/ˈwɔːtəˌkʌl(ə)rɪŋ/(US watercoloring)
noun
1The action, art, or method of painting with watercolours. Also occasionally: watercolours, water-based paint.
2A picture painted with watercolours; = watercolour.
Origin
Mid 18th century; earliest use found in London Evening Post. From watercolour + -ing.
watercolouring2
/ˈwɔːtəˌkʌl(ə)rɪŋ/(US watercoloring)
adjective
That paints in watercolours.
Origin
Late 19th century; earliest use found in Radical Review. From watercolour + -ing.