grinder
nounUK /ˈɡraɪn.dər/
US /ˈɡraɪn.dɚ/
A grinder is a machine that crushes things into small pieces.
She used a coffee grinder to make fresh coffee beans.
SYNONYMS
OTHER MEANINGS
2. A person whose job is to sharpen tools or cut metal by friction.
The knife grinder sharpened all the blades in the shop.
3. A large sandwich with a long roll, also called a sub.
He ordered a turkey grinder for lunch.
4. A molar tooth used for grinding food.
The dentist checked her back grinder for cavities.