abacus
/ˈæbəkəs/
noun
- A frame with beads or counters used for counting and doing arithmetic, especially in ancient or traditional settings.
- She slid the beads on the abacus to solve the math problem.
- The merchant used an abacus to quickly add up the prices.
- Children in some schools still learn to calculate with an abacus.
- The flat slab on top of a column capital in classical architecture.
- Each column's abacus was carved from a single block of marble.
- The ancient Greek temple had a simple abacus above each column.
- The architect measured the abacus to ensure it matched the design.