noun (n)

• a consecrated ointment consisting of a mixture of oil and balsam(noun.artifact)

  Synonym:
  chrisom, holy oil, sacramental oil
  

  source: wordnet30
• Olive oil mixed with balm and spices, consecrated by the bishop on Maundy Thursday, and used in the administration of baptism, confirmation, ordination, etc.(noun)

  source: webster1913