Definitions
1.nounOne who grinds something, such as the teeth.
2.noun(anatomical) A molar.
3.nounA power tool with a spinning abrasive disc, used for grinding, smoothing, and shaping materials, usually metal.
4.nounA sandwich made on a long, cylindrical roll."I am going to the deli to get a grinder for lunch."
5.nounA kitchen gadget for processing coffee, herbs etc. into small or powdered pieces
6.nounThe restless flycatcher (Myiagra inquieta) of Australia, which makes a noise like a scissors grinder.
7.nounA fan or performer of grindcore music.
8.nounA biohacker who uses cybernetic implants or biochemicals to enhance or change their own body.
9.nounA student who studies hard; a swot.
10.nounA person who coaches students for an upcoming examination.
11.noun(ice hockey slang) A hard-working, physical player with limited offensive ability.
12.nounA low-ranking attorney with no clients who works very hard.
13.nounAn outdoor space for drills and parades.