maulstick
/ˈmɔːlstɪk/
noun
- A stick used by painters to support the hand that holds the brush, helping to keep it steady.
- She used a maulstick to avoid smudging the wet canvas.
- The old master's maulstick was worn smooth from years of use.
- The artist rested his brush hand on a maulstick to paint fine details.