Source : Webster's Revised Unabridged Dictionary (1913)

Try cock \Try cock\
   A cock for withdrawing a small quantity of liquid, as for
   testing.

Try \Try\, n.
   1. A screen, or sieve, for grain. [Obs. or Prov. Eng.]
      --Holland.

   2. Act of trying; attempt; experiment; trial.

            This breaking of his has been but a try for his
            friends.                              --Shak.

   {Try cock}, a gauge cock. See under {Gauge}.