화폭이 · 화폭을
canvas, picture surface
Example
화가는 고향의 풍경을 화폭에 담았어요.
The painter captured the scenery of his hometown on canvas.
Word parts
화 painting+폭 width
Literally 'painting width' — the cloth or paper a picture is painted on.
Good to know
Common pattern: ~을/를 화폭에 담다 'to capture something on canvas.'