Definition of: cross-over

(krôs′ō′vər, kros′-) noun
1. A place at which one traverses a road, river, etc.; intersection; passageway.
2. The intersection of two electric lines.
3. A part of a woman's coat, dress, or wrap which crosses from one side to the other.
4. Genetics An interchange of parts between two homologous chromosomes in meiosis: known also as recombination.