Source : Webster's Revised Unabridged Dictionary (1913)

Coverlet \Cov"er*let\ (k?v"?r-l?t), n. [F. couvre-lit; couvrir
   to cover + lit bed, fr. L. lectus bed. See {Cover}.]
   The uppermost cover of a bed or of any piece of furniture.

         Lay her in lilies and in violets . . . And odored
         sheets and arras coverlets.              --Spenser.

Source : WordNet®

coverlet
     n : a decorative bedspread (usually quilted)