Glisten is a verb meaning that something looks shiny, like it's wet. Rocks on the beach glisten in the sun. And your sister’s prom dress, covered in sequins, no doubt will glisten under the disco ball.
The word glisten can also be used metaphorically. After you tossed and turned throughout the night, in the morning, you could see the perfect solution glisten right in front of you. As a noun, a glisten is a bright shine. When you are driving into the setting sun, the glisten of the sun on the hood of the car makes it hard to see.