concealment
	英 [kən'siːlm(ə)nt]
美[kən'silmənt]
	    
    英英释意
	
	- 1. the condition of being concealed or hidden
 
- 2. a covering that serves to conceal or shelter something;
 - "they crouched behind the screen"
 - "under cover of darkness"
 
- 3. the activity of keeping something secret