black cohosh
noun
1
: a large perennial herb (Actaea racemosa synonym Cimicifuga racemosa) native to moist woodlands of the eastern U.S. and Canada that has ternately compound leaves and clusters of small white flowers
2
or less commonly black cohosh root
: the rhizome and roots of the black cohosh used especially to treat symptoms of menopause
also
: a preparation or extract of this root used as an herbal remedy
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Merriam-Webster unabridged
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