Question

what is stencil painting?

Answer 1

Parts of a stencil. ... In practice, the (object) stencil is usually a thin sheet of material, such as paper, plastic, wood or metal, with letters or a design cut from it, used to produce the letters or design on an underlying surface by applying pigment through the cut-out holes in the material.

Answer 2

A stencil is usually a thin sheet of material, such as paper, plastic, wood and metal letter and design cut from it used to produce the letter or design on an underlying surface by applying pigment through the cut holes of the material.
And painting done on it is called stencil painting.
Hope it helps you