Idioms and Phrases with dig down
Pay with money from one's own pocket; be generous. For example, We've got to dig down deep to make the next payment. [Colloquial; c. 1940]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.