abacı

An abacus (plurals abacuses or abaci), also called a counting frame, is a calculating tool for performing arithmetical processes, often constructed as a wooden frame with beads sliding on wires. The user, called an abacist, slides counters by hand on rods or in grooves. It was in use centuries before the adoption of the written Hindu-Arabic numeral system and is still widely used by merchants and clerks in China, Japan, Africa and elsewhere.
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n. maker or seller of croase wool cloth or garments

"aba maker; aba seller"

abaci /'æbəkəs/
danh từ, số nhiều abaci, abacuses bàn tínhto move counters of an abacus; to work an abacus: tính bằng bàn tính, gảy bàn tính (kiến trúc) đầu cột, đỉnh cột
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