noun (n)

• a grounder that rolls along the infield(noun.act)

  source: wordnet30
• a long heavy sea wave as it advances towards the shore(noun.event)

  Synonym:
  roll, rolling wave
  

  source: wordnet30
• a small wheel without spokes (as on a roller skate)(noun.artifact)

  source: wordnet30
• a cylinder that revolves(noun.artifact)

  source: wordnet30
• a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it(noun.artifact)

  Synonym:
  crimper, curler, hair curler
  

  source: wordnet30
• Old World bird that tumbles or rolls in flight; related to kingfishers(noun.animal)

  source: wordnet30
• pigeon that executes backward somersaults in flight or on the ground(noun.animal)

  Synonym:
  tumbler, tumbler pigeon
  

  source: wordnet30
• One who, or that which, rolls; especially, a cylinder, sometimes grooved, of wood, stone, metal, etc., used in husbandry and the arts.(noun)

  source: webster1913