Denshi Jisho — Online Japanese dictionary

飛び交う とびかう to fly about; to flutter about; to flit about; to fly past each other
Common word, Godan verb with u ending, Intransitive verb 

You can also

Look up kanji details for 飛び交う.

Try a Yahoo Jisho search for 飛び交う .
Try a Goo Jisho search for 飛び交う .
Try a Google search for 飛び交う .