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            Noun
-  A person who works in space.
-  An object inserted to hold a space open in a row of items eg. beads.
-  A bushing.
-   A forgetful person.
-   A type of add-on device used by an asthmatic person to increase the effectiveness of a metered-dose inhaler.
 
     
     
 
         
        
     
     
    
        
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