Learn how to say Cross-Over correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word crossover:
the act, means, or place of crossing over from one part or side, to another
(US) a track by which a railroad train can be switched from one line to another
(US) a person who votes for a candidate of a political party other than the party he or she usually supports
(US) a crossover (sense 7) musical style
a character resulting from crossing-over