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1.
Achillea millefolium. A pretty wildflower with garden varieties often used for its medicinal properties.

In the ancient divination I Ching, people traditionally threw the dried long stalks of the Yarrow flower instead of coins.

Sometimes used instead of hops in the Middle Ages to brew! Yum.
the sea-side is covered in beautiful yarrow and sea grasses.
by beautyinreality February 03, 2010
 
2.
Small town located outside of Chilliwack, BC. Finding Yarrow also can compare to finding "A hole in the ground".
After finding Yarrow, any feat is possible.
by The Black Plague June 22, 2003
 
3.
Yarrow is a small self sufficiant community outside of Chilliwack where everyone smokes pot and drinks beer. Most of the citizens of Yarrow are rednecks.

If you live in yarrow you live there for one or more of these 3 reasons:
- You are rich and have a lot of land
- You're a farmer or hobby farmer
- Or you are a pot cultivator

yarrow is the safest place to smoke ANYTHING
"Welcome To *yarrow scratched out* Our Pot Cloud!"
by Chauncey Eckert April 18, 2010
 
4.
Slang for the tip of a penis
Girl1- his yarrow felt so good inside of me
Girl2- really?
Girl1- yup
by Kyrsp33dy September 13, 2014
 
5.
Slang for the tip of a penis
Girl1- his yarrow felt so good inside of me
Girl2- really?
Girl1- yup
by Kyrsp33dy September 13, 2014