The term ASHY RESIDUE can be broken down into six crossword solutions: SOOT (4 letters), CALX (4 letters), PALE (4 letters), WAN (3 letters), ASH (3 letters), and ASHES (5 letters). SOOT is a black or dark gray powdery or flaky substance consisting of amorphous carbon, produced by the incomplete combustion of coal, wood, oil, or other organic matter. CALX is a white or grayish powder formed when a metal is heated strongly in air and combines with oxygen. PALE is a light grayish yellow color. WAN is having a PALE, sickly, or exhausted appearance. ASH is the solid remains of a fire. ASHES are the gray or black powdery residue left after the burning of a substance. LINT is a soft, fuzzy material made from fibers of cotton or other fabrics that accumulates on clothing and upholstery.