abacus
Translation
abacus, counting frame
Examples
He can calculate quickly on an abacus.
He can calculate quickly on an abacus.
The abacus is an ancient counting tool.
The abacus is an ancient counting tool.
Grammar Patterns
((noun)) a frame with beads for counting. He can calculate quickly on an abacus.
Similar Words
Synonyms: counting frame
Etymology
From Latin 'abacus', from Greek 'abax' meaning 'slab' or 'drawing board'.
Memory Tips
Picture the beads on the frame. 'A-bac-us' sounds a bit like 'a-bead-us'.