Aaron's beard
nounUK /ˈɛəɹ.ənz bɪəd/ · US /ˈɛɹ.ənz bɪɹd/
Etymology From the reference in Psalms 133:2 in the Bible.
› A common name for several plants that have…
1
Cymbalaria muralis (ivy-leaved toadflax, Kenilworth ivy).
2
Hypericum calycinum (rose of Sharon, great St. John's-wort, Jerusalem star).
3
Saxifraga stolonifera (creeping saxifrage, strawberry geranium).
4
Opuntia leucotricha (arborescent prickly pear, Aaron's beard cactus).
5
Used other than figuratively or idiomatically: see Aaron, -'s, beard.