noun. 
                    The act of detaining.
                  
                
                  
                    noun. 
                    The state or a period of being detained, especially.
                  
                
                  
                    noun. 
                    A period of temporary custody while awaiting trial.
                  
                
                  
                    noun. 
                    A holding of a person in custody or confinement by authorities for political or military reasons.
                  
                
                  
                    noun. 
                    A form of punishment by which a student is made to stay after regular school hours.