muller
n. countable C2 Proficiency US //ˈməɫɝ// UK //mˈʌlɐ// muller
n. a heavy tool with a flat bottom used to grind materials into a fine powder. You use it most often when mixing your own paints or inks.
n. a heavy, flat-bottomed instrument, typically made of glass or stone, used for grinding pigments into a medium. Refers to the physical tool used in manual pigment preparation.
The artist used a glass muller to mix the blue pigment.
To achieve the smoothest texture for her oil paints, she spent hours using a stone muller on a glass slab.
Traditional pigment preparation requires a heavy muller and a ground-glass plate to ensure the particles are evenly dispersed within the linseed oil medium.
Usage
Commonly used in the context of fine arts and traditional paint-making.