Tut \Tut\ Be still; hush; -- an exclamation used for checking or rebuking.
Source: Webster's Revised Unabridged Dictionary (1913)
Tut \Tut\, n. [Cf. Sw. tut a point, pipe, tube, Dan. tut a cornet.]1. An imperial ensign consisting of a golden globe with a cross on it.
2. A hassock. [Obs. or Prov. Eng.]