calomel
/ˈkæləˌmɛl/
noun
- A white, tasteless powder formerly used as a medicine to cause bowel movements or as a disinfectant.
- Historians note that calomel was a common treatment for infections before modern antibiotics.
- The old medicine cabinet contained a small bottle of calomel labeled 'for occasional use.'
- In the 1800s, doctors often prescribed calomel for patients with digestive problems.