abacus
/ˈæbəkəs/
noun
An oblong frame with rows of wires or grooves along which beads are slid, used for calculating.
An abacus with 5 beads per wire will do quite nicely.
noun
An oblong frame with rows of wires or grooves along which beads are slid, used for calculating.
An abacus with 5 beads per wire will do quite nicely.
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