The term 'spin out' can be defined as a situation in which someone or something loses control and is unable to continue in a straight line. This term can be broken down into four crossword solutions: LENGTHEN (8 letters), EXTEND (6 letters), SKID (4 letters), and REEL (4 letters). LENGTHEN means to make something longer, EXTEND means to increase the length of something, SKID means to slide or slip on a surface, and REEL means to spin around quickly. Together, these words describe the action of spinning out, which is when someone or something loses control and is unable to continue in a straight line.