Definitions

1. noun

A white crystalline alkaloid obtained from the bark of the cinchona tree, used in medicine to treat malaria and as an antipyretic.

“The doctor prescribed quinine to treat the patient’s malaria symptoms.”

2. noun

A bitter or slightly sweet, yellowish liquid, often used as a flavoring or in medicine.

“The bartender added a few drops of quinine to the gin and tonic.”

3. adjective

Relating to or obtained from the cinchona tree.

“The pharmacologist studied the quinine content in the cinchona bark extract.”