Definition of witches' butter in English:

witches' butter

Line breaks: witches' but¦ter

noun

[mass noun]
A black gelatinous European fungus which forms folded cup-like masses on dead wood.
  • Exidia plana, family Tremellaceae, class Hymenomycetes
More example sentences
  • If you're not a witch, you're not likely to want to try eating Witch's Butter.

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Pronunciation: ˌəʊlɪˈadʒɪnəs
adjective
rich in, covered with, or producing oil; oily