Definition of Aleppo gall
: a hard brittle spherical body that is about the size of a hickory nut and is produced on the twigs of an oak (Quercus infectoria) by a gall wasp (Cynips tinctoria)
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Merriam-Webster unabridged
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Time Traveler for Aleppo gall
The first known use of Aleppo gall was in 1699
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