Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to sweet balm: lemon balm
The leaves from the tops of Melissa officinalis (family Labiatae), a plant of southern Europe; a diaphoretic.
Synonym(s): sweet balm
[G. a bee]
(1) A perennial herb, the oil of which contains citral, citronellal, eugenol acetate, flavonoids, geraniol, polyphenols, tannin, and triterpenoids. Lemon balm is antihistaminic, antipyretic, antispasmodic, antiviral, carminative, sedative, and tonic; it has been used for allergies, colds, depression, eczema, flu, headaches, insomnia, menstrual disorders, vomiting
(2) An extract of lemon—Citrus limon—that has been used topically for herpes simplex-induced cold sores