洞孔 dòngkǒng
          
              dòngkǒng 
              
              noun 
              hole 
              Domain: Modern Chinese 现代汉语
              
              
              
              
                Notes: (CC-CEDICT '洞孔')
              
               
          
          
Contained in
- 钥匙洞孔(鑰匙洞孔) keyhole