head out

1

Depart, begin a journey, as in The ship was heading out to sea, or When do you head out again?

2

head out after. Follow or pursue, as in Since they knew the way, we headed out after them, or A police car headed out after the car thieves.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.