In India's caste system, an untouchable, dalit, or achuta is a person outside of the four castes, and considered below them. Untouchables include such people as leather-workers. There are various subcastes or jati within untouchable, the lowest ranking generally considered to be the Bhangis.
Harijan was the polite form for untouchable coined by Mahatma Gandhi which means "Children of God" (Hari is another name for Vishnu, a Hindu God). Untouchables generally consider this term to be condescending and prefer the name dalit, variously translated as "crushed", "stepped on" or "oppressed". The term scheduled castes is also used in the Indian legal system to refer to this group along with other non-caste tribes.
2. The lowest ranking in the Hindu/Indian society. Usually, they are poor and live far away from the towns. You cannot even look at them for you will get bad luck.
3. Someone that is ravashing and/or someone you can't touch because A) men/women are afraid to talk to this B) There is something or someone stopping him/her to talk to this person.
2. If you look at that untouchable, the gods would probably not reincarnate you to something good.
3. As he danced in the nightclub with neon flashing his eyes, he thought he has saw and illusion as he gazed at someone so angelic-like.