marjoram UK /ˈmɑːd͡ʒ(ə)ɹəm/US /ˈmɑɹd͡ʒəɹəm/ noun2 •A herb of the mint family, Origanum majorana, having aromatic leaves.The Lillie I condemned for thy hand, / And buds of marierom had stolne thy haire — 1609 •The leaves of this plant, especially dried, used in flavouring food. formsmarjorams