Meaning

noun widely cultivated for its fragrant grey-green leaves used in cooking and in perfumery

noun extremely pungent leaves used fresh or dried as seasoning for especially meats

originA combination of Rose + Mary, referring to the flower as a symbol of Virgin Mary, first recorded in the eighteenth century. It is found in continental Europe as Rosemarie and Rosa Maria. After mid-nineteenth century when flower names became common it may also refer to the herb rosemary, Latin ros marinus "dew of the sea".

Etymology from Wiktionary, CC BY-SA 3.0