Eye liner is a cosmetic product used to enhance the eyes. It is typically applied around the LASH line, RETINA, BROW, cornea, and LID. LASH is a four letter word for the long, curved hairs that grow at the edge of the eyelids. RETINA is a six letter word for the light-sensitive layer of tissue lining the back of the eye. BROW is a four letter word for the area above the eyes. Cornea is a six letter word for the transparent outer layer of the eye. LID is a three letter word for the movable cover of the eye.