noun, noun or participle which takes 'suru'
sealing up; plastering up; filling joints
Refers to filling or sealing gaps, cracks, or joints, especially in construction or woodworking contexts. Often used with する to describe the action.
板の隙間を目塗りする。
I fill the gaps between the boards.
壁のひび割れに目塗りを施した。
We applied sealing to the cracks in the wall.