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.
3. fragging. ....the deliberate assassination or suffocation or retaliation against any person who speaks out on their rights or about government employee abuses, made to look like a policy malfunction or a characterlogical flaw of that person resulting in injury or death to the target or person being fragged..