The term DIAMOND COVER can be solved by the crossword solutions TARP (4 letters), TARPS (5 letters), and NEIL (4 letters). TARP stands for 'TARPAULIN, ' which is a large, waterproof sheet of material used to cover objects or areas. TARPS is the plural form of TARPAULIN. Neil is a given name, which could refer to Neil Diamond, an American singer-songwriter who has released many albums with diamond-themed covers.