English to English

noun (n)

• a thin triangular flap of a heart valve(noun.body)

  Synonym:
  cusp
  

  source: wordnet30
• part of a compound leaf(noun.plant)

  source: wordnet30
• a small book usually having a paper cover(noun.communication)

  Synonym:
  booklet, brochure, folder, pamphlet
  

  source: wordnet30
• A little leaf; also, a little printed leaf or a tract.(noun)

  source: webster1913