noun (n)

• the act of adding decoration(noun.act)

  Example:
  The children had to be in bed before it was time for the trimming of the tree.
  

  source: wordnet30
• a decoration or adornment on a garment(noun.artifact)

  Example:
  The trimming on a hat.
  

  Synonym:
  passementerie, trim
  

  source: wordnet30
• cutting down to the desired size or shape(noun.act)

  Synonym:
  clipping, trim
  

  source: wordnet30
• The act of one who trims.(noun)

  source: webster1913