What does clear was the light of loveliness that lit her face like rain mean

The line "Clear was the light of loveliness / That lit her face like rain;" is an example of the use of the figurative language which is Simile. In this line, the "light" of loveliness which lit her face is being compared to the rain. A Simile is a figurative language that compares two different things using the words "like" or "as...as".