The story
From the resemblance in shape to a bat (flying mammal).
Etymology from Wiktionary, CC BY-SA 4.0.
bat nut
Today it means: A nut of water caltrop (Trapa bicornis) or a plant of the species. Full definition →
Today it means: A nut of water caltrop (Trapa bicornis) or a plant of the species. Full definition →
From the resemblance in shape to a bat (flying mammal).
Etymology from Wiktionary, CC BY-SA 4.0.