English to English

noun (n)

• a small book usually having a paper cover(noun.communication)

  Synonym:
  booklet, brochure, leaflet, pamphlet
  

  source: wordnet30
• covering that is folded over to protect the contents(noun.artifact)

  source: wordnet30
• One who, or that which, folds; esp., a flat, knifelike instrument used for folding paper.(noun)

  source: webster1913