noun (n)

• a very slender natural or synthetic fiber(noun.substance)

  Synonym:
  fibril, strand
  

  source: wordnet30
• the stalk of a stamen(noun.plant)

  source: wordnet30
• a threadlike structure (as a chainlike series of cells)(noun.body)

  Synonym:
  filum
  

  source: wordnet30
• a thin wire (usually tungsten) that is heated white hot by the passage of an electric current(noun.artifact)

  source: wordnet30
• A thread or threadlike object or appendage; a fiber; esp. (Bot.), the threadlike part of the stamen supporting the anther.(noun)

  source: webster1913