Filbert gall


  • Webster's Revised Unabridged Dictionary
    • Filbert gall (Zoöl) a gall resembling a filbert in form, growing in clusters on grapevines. It is produced by the larva of a gallfly (Cecidomyia).
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In literature:

The bile was of a very deep yellow; in the gall bladder we found a stone about the size of a large filbert.
"Trial of Mary Blandy"