abacus

English Thesaurus

1. a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves (noun.artifact)

hypernym	:	calculating machine, calculator,
definition	:	a small machine that is used for mathematical calculations (noun.artifact)

2. a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave (noun.artifact)

hypernym	:	tablet,
definition	:	a slab of stone or wood suitable for bearing an inscription (noun.artifact)