Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun abacus

2 senses of abacus

Sense 1

abacus -- (a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave)

=> tablet -- (a slab of stone or wood suitable for bearing an inscription)

Sense 2

abacus -- (a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves)

=> calculator, calculating machine -- (a small machine that is used for mathematical calculations)