英语释义
1. a lemon-scented grass (Cymbopogon nardus) of southern Asia that yields an oil used in perfumery and as an insect repellent also its oil
2. an oil that smells somewhat like lemons and that is used in candles, lamps, etc., to keep bugs away
3. citronella oil
4. a fragrant grass (Cymbopogon nardus) of southern Asia that yields citronella oil