The Collaborative International Dictionary of English v.0.48:
Rosemary \Rose"ma*ry\, n. [OE. rosmarine, L. rosmarinus; ros dew
(cf. Russ. rosa, Lith. rasa, Skr. rasa juice) + marinus
marine: cf. F. romarin. In English the word has been changed
as if it meant the rose of Mary. See Marine.]
A labiate shrub (Rosmarinus officinalis) with narrow
grayish leaves, growing native in the southern part of
France, Spain, and Italy, also in Asia Minor and in China. It
has a fragrant smell, and a warm, pungent, bitterish taste.
It is used in cookery, perfumery, etc., and is an emblem of
fidelity or constancy.
There's rosemary, that's for remembrance. --Shak.
(a) A little shrub (Andromeda polifolia) growing in cold
swamps and having leaves like those of the rosemary.
(b) See under Marsh.
Rosemary pine, the loblolly pine. See under Loblolly.