Definition of frostweed

: any of several plants upon which ice crystals form during the first frosts: such as
a : an American plant of the genus Helianthemum — see frostwort
b : a salt-marsh fleabane (Pluchea camphorata)

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First Known Use of frostweed

1817, in the meaning defined above

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The first known use of frostweed was in 1817

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Dictionary Entries Near frostweed

frost valve


frostweed aster

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Cite this Entry

“Frostweed.” Dictionary, Merriam-Webster, Accessed 27 Oct. 2021.

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