See balm in Webster's New World College Dictionary
noun
an aromatic gum resin obtained from certain trees and plants (esp. genus Commiphora of the bursera family) and used in the manufacture of perfume, medicine, etc.; balsam
any fragrant ointment or aromatic oil for healing or anointing
anything healing or soothing, esp. to the mind or temper
any of various aromatic plants of the mint family, as the lemon balm
pleasant odor; fragrance
See balm in American Heritage Dictionary 4
(bäm)
noun
a. A chiefly Mediterranean perennial herb (Melissa officinalis) in the mint family, grown for its lemon-scented foliage, which is used as a seasoning or for tea. Also called lemon balm.
b. Any of several related plants in the mint family, such as the bee balm and the horse balm.
Any of various aromatic resins exuded from several trees and shrubs, especially the balm of Gilead (Commiphora) and related plants.
An aromatic salve or oil.
A pleasing aromatic fragrance.
A soothing, healing, or comforting agent or quality.