abacus
/ˈæbəkəs; `æbəkəs/ n (pl -cuses / -kEsIz; -kE9sIz/) frame with beads that slide along parallel rods, used for teaching numbers to children, and (in some countries) for counting 算盘.
/ˈæbəkəs; `æbəkəs/ n (pl -cuses / -kEsIz; -kE9sIz/) frame with beads that slide along parallel rods, used for teaching numbers to children, and (in some countries) for counting 算盘.
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