| first water | |
| —n | |
| 1. | the finest quality of diamond or other precious stone |
| 2. | the highest grade or best quality |
| 3. | the most extreme kind: a fool of the first water |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a stew of meat, vegetables, potatoes, etc. |