make bail

Put up security as an assurance that someone released from prison will appear for trial, as in He didn't think he could make bail for his brother. The use of bail for “security” was first recorded in 1495.

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