The Collaborative International Dictionary of English v.0.48:

Quiet \Qui"et\, v. t. [imp. & p. p. Quieted; p. pr. & vb. n.
   Quieting.]
   1. To stop motion in; to still; to reduce to a state of rest,
      or of silence.
      [1913 Webster]

   2. To calm; to appease; to pacify; to lull; to allay; to
      tranquillize; as, to quiet the passions; to quiet clamors
      or disorders; to quiet pain or grief.
      [1913 Webster]

            Quiet yourselves, I pray, and be at peace. --Shak.
      [1913 Webster]