The Collaborative International Dictionary of English v.0.48:

Trappings \Trap"pings\, n. pl. [From Trap to dress with
   ornaments.]
   1. That which serves to trap or adorn; ornaments; dress;
      superficial decorations.
      [1913 Webster]

            Trappings of life, for ornament, not use. --Dryden.
      [1913 Webster]

            These but the trappings and the suits of woe.
                                                  --Shak.
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   2. Specifically, ornaments to be put on horses.
      [1913 Webster]

            Caparisons and steeds,
            Bases and tinsel trappings.           --Milton.
      [1913 Webster]

WordNet (r) 3.0 (2006):

trappings
    n 1: (usually plural) accessory wearing apparel [syn:
         furnishing, trappings]