Aaron's-beard
noun
Aar·on's-beard
plural Aaron's-beards
: any of several plants having numerous stamens or threadlike runners: such as
a
: great saint-john's-wort
b
: jerusalem star
d
: kenilworth ivy
e
or Aaron's-beard cactus
: a cactus (Opuntia leucotricha) that has white hairs on its joints
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Merriam-Webster unabridged
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