noun (n)

• a small ring-shaped friedcake(noun.food)

  Synonym:
  donut, doughnut
  

  source: wordnet30
• a weight that sinks (as to hold nets or fishing lines under water)(noun.artifact)

  source: wordnet30
• a pitch that curves downward rapidly as it approaches the plate(noun.act)

  source: wordnet30
• One who, or that which, sinks.(noun)

  source: webster1913