Chinese Abacus. The abacus is first known in China from the Northern Song dynasty through the work of Shao Yong (1011-1077). Like many early inventions it is not clear precisely where it originally came from. Some say Central Asia; some Asia Minor and others China.
Snag(noun) a stump or base of a branch that has been lopped off; a short branch, or a sharp or rough branch; a knot; a protuberance. Snag(noun) a tooth projecting beyond the rest; contemptuously, a broken or decayed tooth.
(snÊg) adj. snugâ¢ger, snugâ¢gest, adj. 1. warmly comfortable or cozy, as a place, accommodations, etc.: a snug little house. 2. fitting closely, as a garment. 3. more or less compact or limited in size, and sheltered or warm: a snug harbor. 4. trim or compactly arranged, as a ship or its parts. 5. enabling one to live in comfort: a snug fortune.