A white dwarf is a type of STAR that is the end result of the evolution of stars like our Sun. It is the smallest, densest, and hottest type of STAR, and is composed mostly of carbon and oxygen. The term 'white dwarf' comes from the fact that these stars are very hot and emit a white light. The crossword solutions for the term WHITE DWARF are STAR (4 letters), SLEEPY (6 letters), and DOC (3 letters). STAR refers to the fact that white dwarfs are stars, SLEEPY refers to the fact that they are very old and no longer produce energy, and DOC refers to the fact that they are very dense.