Just what is a jilbab? Basically, it is a collective term for all loose fitting and lengthy clothing items that Moslem women wear. But unlike the other clothing pieces worn by the Moslem women, this jilbab is basically a form of a coat that is meant to be worn over the clothes so that the Islamic requirement for wearing the hijab will be met automatically. The jilbab is known by many names. It may be called the jilbaab. Others call it the manteau, which is French for mantle. Still others call it the jubbah.