grinder

UK: /ˈgraɪndə^r/ US: /ˈgraɪndɚ/ ,(grīn′dər)

WordReference Random House Learner's Dictionary of American English © 2026

grind•er /ˈgraɪndɚ/   n. [countable]

1. a person or thing that grinds, as an appliance for grinding food.
2. a sharpener of tools.
3. Dentistry
   • a molar tooth.
   • grinders, [plural] [Slang.] the teeth.
4. Dialect Terms [Chiefly New England and Inland North.] hero (def. 4).

WordReference Random House Unabridged Dictionary of American English © 2026

grind•er  (grīn′dər), n. 

1. a person or thing that grinds.
2. a kitchen device or appliance for grinding food.
3. a sharpener of tools.
4. Dentistry a molar tooth.
5. Dialect Terms [Chiefly New Eng. and Inland North.] See hero sandwich. 
6. Dentistry, Informal Terms grinders, [Informal.] the teeth.

• Middle English. See grind, -er¹ 1350–1400

Regional Variation

5. . See hero sandwich. 

Collins Concise English Dictionary © HarperCollins Publishers::

grinder / ˈɡraɪndə/ noun

1. a person who grinds, esp one who grinds cutting tools
2. a machine for grinding
3. a molar tooth