A ringlet is a type of hairstyle. It is achieved by wrapping a lock of hair around the length of a thin curling iron or can be sported naturally by people with sufficiently tightly curled hair. Ringlets are often also known as tube curls.
Narrow region in Saturn's planetary ring system where the density of ring particles is high. Voyager discovered that the rings visible from Earth are actually composed of tens of thousands of ringlets.