abacus
(noun)
noun
1. a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave
Definition categories: man–made, tablet
2. a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves
Definition categories: man–made, calculator
Sentences with abacus as a noun:
- I've heard merchants still use an abacus for adding things up in China.