September is Etymology Month (16)

ХАЛАТ [chalát] 'dressing-gown, oriental robe'. 17th century at the latest, via Tkc. (Radlov designates khyl'at as Turk.), from Ar. khil'at 'robe of honour'. (In some Asiatic societies such garments wer presented by high-ranking dignitaries, as a mark of favour.) Derivatives include халатный 'negligent'.