Merriam-Webster Collegiate Dictionary - muster

 I. noun  Etymology: Middle English mustre, from Anglo-French mostre, monstre, from mustrer  Date: 14th century  1. a representative specimen ; sample  2.  a. an act of assembling; specifically formal military inspection  b. critical examination  c. an assembled group ; collection  d. inventory  II. verb  (~ed; ~ing)  Etymology: Middle English mustren to show, ~, from Anglo-French mustrer, monstrer, from Latin monstrare to show, from monstrum evil omen, monster — more at monster  Date: 15th century  transitive verb  1.  a. to cause to gather ; convene  b. to enroll formally — usually used with in or into was ~ed into the army  c. to call the roll of  2.  a. to bring together ; collect  b. to call forth ; rouse  3. to amount to ; comprise  intransitive verb to come together ; congregate  Synonyms: see summon