薬指（くすりゆび、kusuriyubi）
- ring finger

The word 薬指 (くすりゆび) refers to the ring finger. It is the fourth finger on the human hand, counting from the thumb. The name literally translates to "medicine finger" or "finger for medicine," though its connection to medicine in modern times is minimal.

⚫︎ 薬指に指輪をはめています。 Translation: I am wearing a ring on my ring finger. ⚫︎ 結婚指輪は通常、薬指にはめます。 Translation: Wedding rings are usually worn on the ring finger. ⚫︎ 彼女は薬指に美しいダイヤモンドの指輪をしていた。 Translation: She was wearing a beautiful diamond ring on her ring finger.

This word is used in everyday conversation to describe the ring finger. It's used in contexts involving rings, hand gestures, or describing the specific fingers. It's a very common word, easy to fit into sentences about jewelry, anatomy, or even expressing emotions.

⚫︎ The word is typically written in kanji as 薬指, which is the most common and standard way. ⚫︎ The reading is always くすりゆび in hiragana. ⚫︎ There are no other common ways to write this word. The okurigana is standard; the "ゆび" part is necessary.

There are no direct synonyms in Japanese for "ring finger" other than potentially using a phrase to describe the location, like "四番目の指" (yonbanme no yubi), meaning "the fourth finger." However, this isn't a direct synonym for 薬指 but a descriptive phrase.

There are no direct antonyms for 薬指. It's a specific finger and doesn't have an opposite. One could refer to other fingers (e.g., thumb, index finger, etc.) to specify a different finger.

結婚指輪を《薬指に選びました。》 ・Translation: I chose a wedding ring for my ring finger. ・Explanation: This sentence describes the action of selecting a wedding ring specifically for the 薬指.

彼女の《薬指には、古い傷跡がある。》 ・Translation: She has an old scar on her ring finger. ・Explanation: This sentence describes a physical characteristic of someone's 薬指.

The etymology of 薬指 is uncertain, but one theory suggests it's related to ancient medicinal practices. In the past, it was believed that the ring finger had a direct vein connection to the heart. Therefore, it was used to apply medicine. However, this is largely a historical connection and not a current practice. Another theory suggests that the finger was used for grinding medicine, but the evidence is weak.