grindstone (ˈɡraɪndˌstəʊn) ![]() | |
| —n | |
| 1. | a. a machine having a circular block of stone or composite abrasive rotated for sharpening tools or grinding metal |
| b. the stone used in this machine | |
| c. any stone used for sharpening; whetstone | |
| 2. | another name for millstone |
| 3. | keep one's nose to the grindstone, have one's nose to the grindstone to work hard and perseveringly |
| a stew of meat, vegetables, potatoes, etc. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |