The term 'Jump Start' can be broken down into four separate words: JAY (3 letters), BOO (3 letters), REFRESH (7 letters), and ROCKYMOUNTAINHIGH (17 letters). JAY is a common name, and can also refer to a type of bird. BOO is an expression used to show disapproval or contempt. REFRESH is a verb meaning to restore energy or vigor. Rocky Mountain High is a song by John Denver, released in 1972. Together, these words form the phrase 'Jump Start, ' which is used to describe the process of jump-starting a car battery.