lemon balm

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun a perennial herb, Melissa officinalis, of southern Europe; used as a flavouring in ice cream etc

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun bushy perennial Old World mint having small white or yellowish flowers and fragrant lemon-flavored leaves; a garden escapee in northern Europe and North America
• noun lemony leaves used for a tisane or in soups or fruit punches