birthroot /'b\\\\:θru:t/ 📖 中文释义 n. [植]直立延龄草(其根可用作催产药) 📘 English Definition(英文释义) n trillium of eastern North America having malodorous pink to purple flowers and an astringent root used in folk medicine especially to ease childbirth ← birthrights B 字母词表 births →