Sun block is a type of protection from the sun's ultraviolet radiation. It is often used to prevent sunburn and skin cancer. The crossword solutions for the term sun block include CLOUD (5 letters), ECLIPSE (7 letters), smaze (5 letters), PARASOL (7 letters), VISOR (5 letters), CURTAIN (7 letters), SHADE (5 letters), and HAZE (4 letters). CLOUD, ECLIPSE, smaze, VISOR, SHADE, and HAZE all refer to various types of coverings that can be used to block the sun's rays. PARASOL and CURTAIN are physical objects that can be used to provide SHADE from the sun.