noun (n)

• a collar for a dog(noun.artifact)

  source: wordnet30
• a stiff white collar with no opening in the front; a distinctive symbol of the clergy(noun.artifact)

  Synonym:
  clerical collar, roman collar
  

  source: wordnet30
• necklace that fits tightly around a woman's neck(noun.artifact)

  Synonym:
  choker, collar, neckband
  

  source: wordnet30