abacus | sense examples, Usage and Definition from wordnet dictionary online

Noun abacus has 2 senses

abacus - a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave
--₁ is a kind of tablet
abacus - a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves
--₂ is a kind of calculator, calculating machine

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