1911 Encyclopædia Britannica, Volume 18… (1911)
“ MORA, or Morra (Ital. delay) , a game, universally popular in Italy, in which one player endeavours to guess instantly the number of fingers held up by the other. Ancient Egyptian sculptors represent a game of this kind, and it was played by the Romans, who called it micare digitis, or finger-flashing. It is known to the Chinese and to certain tribes of the Pacific Islands. ”
