What ia a hijab?

In Islam, Hijab is the dress code for females... in Arabic word literally means curtain or cover (noun). Most Islamic legal systems define this type of modest dressing as covering everything except the face and hands in public.According to Islamic scholarship, hijab is given the wider meaning of modesty, privacy, and morality; the word for a headscarf or veil used in the Qur'an is khimār (خمار) and not hijab. Still another definition is metaphysical, where al-hijab refers to "the veil which separates man or the world from God."
The Qur'an instructs both Muslim men and women to dress in a modest way.
The clearest verse on the requirement of the hijab is surah 24:30-31, asking women to draw their khimar over their bosoms.^[5][6]

And say to the believing women that they should lower their gaze and guard their modesty; that they should not display their beauty and ornaments except what (must ordinarily) appear thereof; that they should draw their khimar over their bosoms and not display their beauty except to [...] (Qur'an 24:31)

In the following verse, Muslim women are asked to draw their jilbab over them (when they go out), as a measure to distinguish themselves from others, so that they are not harassed. Sura 33:59 reads:^[6]

Those who harass believing men and believing women undeservedly, bear (on themselves) a calumny and a grievous sin. O Prophet! Enjoin your wives, your daughters, and the wives of true believers that they should cast their outer garments over their persons (when abroad): That is most convenient, that they may be distinguished and not be harassed. [...] (Qur'an 33:58-59)