A domestic creature rarely spotted in the winters when it's migrating to the north. it is usually seen with pepsi in one hand and chips in the other.

Also,

A creature which is huge. Umang(ous) can me used as an adjective to show how big an object or the person is.

A very very very very very very sexy guy :]

An Umang is a term used to describe a socially-awkward, mentally limited teenage girl. This is a relatively new term that came out of the Internet Boom.
Some cultures consider the calling of someone "Umang" as deeply offensive
To be called Umang is like being compared to dog turds. And not fresh dog turds. Umangs are more like tiny shrivelled up nuggets of canine excrement.

Umangs are also known to be horrible dancers. But they can sing well given proper training. This is caused by a diet filled with samosas and hot spicy curry causing various gases to accumulate in the belly of Umang and cause a wonderful singing voice.