accoutrement

 
Pronunciation: /əˈkuːtəm(ə)nt, -trə-/
(US also accouterment)

noun

(usually accoutrements)
  • an additional item of dress or equipment: the accoutrements of religious ritual

Origin:

mid 16th century: from French, from accoutrer 'clothe, equip' (see accoutre)