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      cusp
      
	
      英 [k?sp]
美[k?sp]

      


	    
      
	
        
    
      • n. 尖頭；尖端
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      英英釋意
      
	
      
	
      1. point formed by two intersecting arcs (as from the intrados of a Gothic arch)
      

      2. a thin triangular flap of a heart valve
      

      3. small elevation on the grinding surface of a tooth