v.
   - come or bring (troops) together, especially for inspection or in preparation for battle. 
▸(of a group of people) gather together.
 ▸Austral./NZ round up (livestock).
 - summon up (a feeling, attitude, or response).
 - 
(muster someone in or out)
 US enrol someone into (or discharge someone from) military service.
 
n.
  - an instance of mustering troops. 
▸Austral./NZ a rounding up of livestock.
 - Austral. informal the number of people attending a meeting.
 
 
  Phrase
  
    
      - pass muster
 be accepted as satisfactory. 
    
   
  Derivative
  
    
      - musterer n. (Austral./NZ).
 
    
   
  Etymology
  ME: from OFr. moustrer (v.), moustre (n.), from L. monstrare ‘to show’.