putty; filler
A malleable substance used to fill gaps, smooth surfaces, or seal joints in construction, crafts, and repairs.
I filled the hole in the wall with putty.
I applied putty to the hole in the wall to make it flat.
模型作りにはパテが欠かせない。
Putty is indispensable for model making.
I filled the gap in the window frame with putty.