noun (n)

• a long thin implement made of metal or wood(noun.artifact)

  source: wordnet30
• any rod-shaped bacterium(noun.animal)

  source: wordnet30
• a linear measure of 16.5 feet(noun.quantity)

  Synonym:
  perch, pole
  

  source: wordnet30
• a square rod of land(noun.quantity)

  source: wordnet30
• a visual receptor cell that is sensitive to dim light(noun.body)

  Synonym:
  retinal rod, rod cell
  

  source: wordnet30
• a gangster's pistol(noun.artifact)

  Synonym:
  gat
  

  source: wordnet30
• A straight and slender stick; a wand; hence, any slender bar, as of wood or metal (applied to various purposes).(noun)

  source: webster1913