κύβος

Etymology
Difficult to trace. The word passed to and from a number of languages (compare 🇨🇬).

Often thought to be derived from the root 🇨🇬, reconstructed in LIV based on 🇨🇬 and some other verb forms. Compare 🇨🇬 and 🇨🇬, and (formally unrelated) for the semantic connection between “vertebra, bone (of an animal)” and “die, dice”. Animal bones were historically used as playing dice.

According to Beekes, words for dice are often loans and the Lydians claimed to have invented the game of, suggesting a possible loan from.

Appears to have no relation to Arabic.

Noun

 * 1)  square
 * 2)  cube
 * 3) die, dice
 * 4) chance
 * 5)  cube, cubic number
 * 6)  vertebra; hollow above the hip of cattle
 * 1)  vertebra; hollow above the hip of cattle

Etymology
From.

Noun

 * 1)  cube