The crossword solution for the term 'PEEPER PARTS' is UVEAS, which stands for the parts of the eye. UVEAS is an acronym for the three main parts of the eye: the uvea, the vitreous, and the aqueous. The uvea is the middle layer of the eye, which contains the iris, ciliary body, and choroid. The vitreous is the jelly-like substance that fills the back of the eye. The aqueous is the clear fluid that fills the front of the eye. Together, these three parts make up the anatomy of the eye.