It is called a mortar and pestle.
The mortar is a bowl-shaped container used to hold the ingredients, while the pestle is a heavy tool used to crush and grind the ingredients in the mortar. The pestle is typically a heavy and blunt object, while the mortar is a bowl with a smooth interior.
A bowl and a rock!
That is a mortar and pestle.
The word pestle is generally used in connection with the word mortar. It is from Latin pistillum, an instrument used for crushing; the mortar is a kind of bowl, and the pestle is used to crush a substance to powder in the mortar.
A mortar and pestle is a tool used in science for grinding, mixing, or crushing materials into a fine powder or paste. The mortar is a bowl-shaped container, and the pestle is a blunt, club-shaped tool used to grind and pulverize substances. This equipment is commonly used in laboratories for preparing samples or mixtures.
I'm not sure if this is what you're talking about, but the Mortar and Pestle is the small, usually ceramic or stone, bowl with the rounded masher that people use to make corn meal, etc.
If you are refering to the stone bowls used to hold the wheat to be ground into flour it's called a mortar the items to grind the wheat is called a pestle.
A stone bowl used to make flour is typically called a mortar and pestle. It is used to grind grains, seeds, or other food items into a fine powder or paste. The rough surface of the stone helps to break down the ingredients effectively.
Mortar is a very hard bowl in which softer substances are ground or pounded to a powder with a pestle. This site has a picture: http://bowerykitchens.com/bgmp-80.html
Chemicals are ground into powder using a mortar and pestle.
A mortar and pestle made of glass is typically used for grinding and crushing substances into fine powders or pastes. It is commonly used in laboratories for grinding chemicals or in kitchens for grinding spices and herbs. Glass mortar and pestle are preferred for their non-reactive nature and ease of cleaning.