English to English

noun (n)

• an angular or rounded shape made by folding(noun.shape)

  Example:
  A plication on her blouse.
  

  Synonym:
  bend, crease, crimp, flexure, fold
  

  source: wordnet30
• the act of folding in parallel folds(noun.act)

  Synonym:
  pleating
  

  source: wordnet30
• A folding or fold; a plait.(noun)

  source: webster1913