Noun
The definition of lewdness is the quality of being very sexual or lustful in an offensive way.

An example of lewdness is asking people for sexual favors on the streets.

Another example of lewdness can be;

the act of possessing unrestrained passions of sexual desires, which leads someone into the state of flirting and behaving in a way which reveals one’s sexual attraction towards the people he/she is trying to seduce or pursued.