n. 1. a perennial herb (Monarda fistulosa) of North America. [ WordNet 1.5 ]

2. a perennial aromatic herb of eastern North America (Monarda didyma) having variously colored tubular flowers in dense showy heads.
Syn. -- bee balm, bergamot mint, oswego tea. [ WordNet 1.5 ]

3. a bushy perennial Old World mint, Melissa officinalis, having small white or yellowish flowers and fragrant lemon-flavored leaves; a garden escapee in northern Europe and North America.
Syn. -- lemon balm, garden balm, sweet balm, bee balm, Melissa officinalis. [ WordNet 1.5 ]