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A gentian is a small mountain plant, loved for its deep blue or purple flowers. You find it in high, cool places, not in a normal garden. The root is very bitter, and people have long used it in medicine to stir the appetite and help the stomach. Painters and cloth-makers also borrowed the name for a strong blue-violet colour. In hospitals you may still hear gentian violet for a purple liquid once used on cuts and in the mouth — though actually that dye is not made from the flower; it only shares the colour and the name. The word itself is old and a little specialist: , , and doctors use it; most people in a city will not.
龍膽、龍膽花（藥用根稱龍膽草）
組成Came through Middle English from Latin gentiāna. Pliny the Elder said it was named after Gentius, the last king of Illyria, who was said to have found its use as medicine. That story is probably a folk tale, not a sure fact — though the word may still come from Illyrian, where -an is a common ending.
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
gentiannoun/ˈd͡ʒɛnt͡ʃən/
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Any of various herbs of the family Gentianaceae found in temperate and mountainous regions with violet or blue flowers.
- On the cover of the leaflet advertising the Alpenrose Gasthof in Zirl am Gurgl […] there is a decorative picture of a young woman. […] She has bright flaxen hair and laughing eyes of the same hue as the gentians in the meadow beyond the inn.
- Searching again, he noticed something that had eluded him before: a single flower, a gentian, blooming not fifty feet in front of them, where, by all rights, there ought to be solid rock. How does it get enough light to live?
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Dried roots and rhizome of European gentian (Gentiana lutea), used as a tonic.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。