معنی
abacus
abacusnounWord sets 1Corpus examplesabacusabacusesabacusab‧a‧cus /Eˆ?¦bE™kE™s/
noun [countable]Date: 1300-1400
Language: Latin
Origin: Greek abax �flat piece of stone’
a frame with small balls that can be slid along on thick wires, used for counting and calculating