| a scrap or morsel of food left at a meal. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| MR | |
| —abbreviation for | |
| 1. | Master of the Rolls |
| 2. | motivation(al) research |
mr
|
| mR milliroentgen |
MR
|
| Mr. mister (Used as a courtesy title for a man) |