The Collaborative International Dictionary of English v.0.48:

Muster \Mus"ter\, n. [OE. moustre, OF. mostre, moustre, F.
   montre, LL. monstra. See Muster, v. t.]
   1. Something shown for imitation; a pattern. [Obs.]
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   2. A show; a display. [Obs.] --Piers Plowman.
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   3. An assembling or review of troops, as for parade,
      verification of numbers, inspection, exercise, or
      introduction into service.
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            The hurried muster of the soldiers of liberty.
                                                  --Hawthorne.
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            See how in warlike muster they appear,
            In rhombs, and wedges, and half-moons, and wings.
                                                  --Milton.
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   4. The sum total of an army when assembled for review and
      inspection; the whole number of effective men in an army.
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            And the muster was thirty thousands of men.
                                                  --Wyclif.
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            Ye publish the musters of your own bands, and
            proclaim them to amount of thousands. --Hooker.
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   5. Any assemblage or display; a gathering.
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            Of the temporal grandees of the realm, mentof their
            wives and daughters, the muster was great and
            splendid.                             --Macaulay.
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   Muster book, a book in which military forces are
      registered.

   Muster file, a muster roll.

   Muster master (Mil.), one who takes an account of troops,
      and of their equipment; a mustering officer; an inspector.
      [Eng.]

   Muster roll (Mil.), a list or register of all the men in a
      company, troop, or regiment, present or accounted for on
      the day of muster.

   To pass muster, to pass through a muster or inspection
      without censure.
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            Such excuses will not pass muster with God. --South.
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