Singular
crossover

Plural
crossovers

  1. A crossover is a place where one thing crosses over another.
  2. A crossover is a blend of two or more styles of music, intended to appeal to a wider audience.
    The band's new song had crossover appeal to both country and pop listeners.
  3. A crossover is an automobile that is a mix of two kinds of automobiles, like the Pontiac Torrent.
  4. A crossover is a fiction story that borrows places or characters from two or more fictional stories.