Search the dictionary A Chinese word or character, or English Draw a character Search 4 entries. kōngjí 空集 empty set (set theory) kōngjì 空寂 empty and silent shùkòngjīchuáng 数控机床 computer numerical control machine tool (CNC machine tool) shùkòngjīchuáng 數控機床 computer numerical control machine tool (CNC machine tool)