Source : Webster's Revised Unabridged Dictionary (1913)

Marjoram \Mar"jo*ram\, n. [OE. majoran, F. marjolaine, LL.
   marjoraca, fr. L. amaracus, amaracum, Gr. ?, ?.] (Bot.)
   A genus of mintlike plants ({Origanum}) comprising about
   twenty-five species. The sweet marjoram ({O. Majorana}) is
   pecularly aromatic and fragrant, and much used in cookery.
   The wild marjoram of Europe and America is {O. vulgare}, far
   less fragrant than the other.

Source : WordNet®

marjoram
     n 1: aromatic Eurasian perennial [syn: {oregano}, {pot marjoram},
           {wild marjoram}, {winter sweet}, {Origanum vulgare}]
     2: pungent leaves used as seasoning with meats and fowl and in
        stews and soups and omelets [syn: {oregano}]