The story
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: An analogue of the square or cube in arbitrary dimension: 0,1ⁿ along with the (n-1)-dimensional balls joining every 2ⁿ⁻¹ such points that share a coordinate, or any space equivalent. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.