horse balm

horse balm

n.

Any of several strongly aromatic, eastern North American plants of the genus Collinsonia, having opposite leaves, square stems, and axillary clusters of lemon-scented yellow flowers.

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[From its former use for treating ailments of horses.]

Thesaurus

Noun

1.

horse balm - erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States Collinsonia canadensis, horseweed, richweed, stone root, stone-root, stoneroot herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests Collinsonia, genus Collinsonia - small genus of perennial erect or spreading aromatic herbs; United States