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}.