An edible tuber or underground nut, particularly the groundnut or peanut, or a type of pignut plant.
Compound of 'earth' (Old English eorthe) and 'nut' (Old English hnutu, from Proto-Germanic *hnuts). The term was used historically for any nutritious plant part found underground.
Earthnuts represent humanity's earliest food technology—digging for underground nutrients was so important that every ancient culture developed words for these hidden treasures, making them central to survival before agriculture.
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