hand-painted picture; original painting
Refers to a picture created directly by hand, especially in contrast to woodblock prints or reproductions. Often used in art contexts to emphasize authenticity.
This exhibition displays hand-painted ukiyo-e pictures.
Unlike prints, a hand-painted picture is a one-of-a-kind work.
原画 means the original artwork used as a basis for reproduction, whereas 肉筆画 emphasizes the hand-painted nature itself.
Compound of 肉筆 (handwriting or hand-painting, literally 'flesh brush') and 画 (picture). The term highlights the direct, manual creation of the image.