yarrow

¹ American  

[yar-oh] / ˈyær oʊ /

noun

1. a composite plant, Achillea millefolium, of Eurasia, having fernlike leaves and flat-topped clusters of whitish flowers, naturalized in North America.

2. any of various other plants of the genus Achillea, some having yellow flowers.

---

Yarrow ² American  

[yar-oh] / ˈyær oʊ /

noun

1. a river in SE Scotland, flowing into the Tweed. 14 miles (23 km) long.

---

yarrow British  

/ ˈjærəʊ /

noun

1. Also called: milfoil.  any of several plants of the genus Achillea, esp A. millefolium, of Eurasia, having finely dissected leaves and flat clusters of white flower heads: family Asteraceae (composites) See also sneezewort

---

Etymology

Origin of yarrow

before 900; Middle English yar ( o ) we, Old English gearwe; cognate with German Garbe sheaf

Example Sentences

Certain species such as cow parsley, yarrow and knapweed are in fact spreading, and he welcomes an influx of non-native plants and "garden escapes", such as snowdrop and buddleia.

From BBC • Oct. 30, 2025

Herbalist Matthew Wood calls yarrow the “master of the blood” and the “master of fever.”

From Salon • Jan. 31, 2024

In parallel, Werner plans to monitor how key plants, including Gary oak, buckbrush, California poppy, and yarrow, respond to different planting densities on nearly 100 plots.

From Science Magazine • Oct. 18, 2023

“But now, I’m starting to see the clover take off and the yarrow come up.”

From Seattle Times • Mar. 17, 2023

But then, Jacob came back, his hands dripping with yarrow root.

From "The Inquisitor's Tale" by Adam Gidwitz