noun
cinchona
Refers to the cinchona tree or its bark, known as a source of quinine. Often used in medical or historical contexts.
from Dutch kina
キナの樹皮からキニーネが抽出される。
Quinine is extracted from the bark of the cinchona tree.
キニーネ is the alkaloid quinine derived from cinchona bark, while キナ refers to the tree itself or its bark.
Borrowed from Dutch 'kina', ultimately from Quechua 'kina-kina' (bark of barks).