ABACUS


Meaning of ABACUS in English

ab ‧ a ‧ cus /ˈæbəkəs/ BrE AmE 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

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.