rosemaryyoudaoicibaDictYouDict[rosemary 词源字典]
rosemary: [15] Originally, rosemary had no connection with either ‘roses’ or ‘Mary’. Etymologically it means ‘sea-dew’. It comes, probably via Old French rosmarin, from late Latin rōsmarīnum. This in turn was a conflation of Latin rōs marīnus, rōs meaning ‘dew’ and marīnus ‘of the sea’ (an allusion to the fact that the plant grew near sea coasts). The word originally entered English in the 14th century as rosmarine, but association with rose and Mary (the Virgin Mary, no doubt) led to its alteration to rosemary.
=> marine, mere, mermaid[rosemary etymology, rosemary origin, 英语词源]
rosemary (n.)youdaoicibaDictYouDict
late 14c., earlier rosmarine (c. 1300), from Latin rosmarinus, literally "dew of the sea" (compare French romarin), from ros "dew" + marinus (see marine (adj.)). Perhaps so called because it grew near coasts. Form altered in English by influence of rose and Mary.

Latin ros is from PIE *ers- "to be wet" (cognates: Lithuanian rasa, Old Church Slavonic rosa "dew," Sanskrit rasah "sap, juice, fluid, essence," Hittite arszi "flows," and perhaps also Rha, Scythian name of the River Volga (see rhubarb)).