Definitions

1. noun

A type of fossil fuel derived from wood; also, a type of oil extracted from fish and used as a lubricant or illuminant.

“The old factory used ichthyol for lighting and lubrication purposes.”

2. noun

A type of mineral oil obtained from the entrails of fish, especially sturgeon, and used as a skin ointment or in medical applications.

“The dermatologist recommended applying ichthyol to the patient’s skin to reduce inflammation.”