The term 'PRIME Times' can be broken down into two words, 'PRIME' and 'Times'. 'PRIME' is an adjective meaning of the highest quality or importance, and 'Times' refers to a period of time. Together, the phrase 'PRIME Times' can refer to a period of time when something is at its peak or most important. The crossword solution for this term is 'Heydays', which is a noun meaning a period of time when someone or something is at their peak or most successful.