Definition of alumroot in English:

alumroot

Syllabification: al·um·root
Pronunciation: /ˈaləmˌro͞ot, -ˌro͝ot
 
/
(also alum root)

noun

chiefly North American
  • A heuchera, especially the green-flowered H. americana and the white-flowered H. parvifolia.
    More example sentences
    • Heuchera americana, or alum root, is adaptable to sun or shade, given sufficient moisture.
    • The amount of alum root in such compounds is 1 ounce.
    • It was called Alum Root Flower because its roots shared the astringent qualities of species of true alum root.

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elaborate ornamentation of a vocal melody