Other Idioms and Phrases with stackup
Measure up, equal, as in Their gift doesn't stack up against mine. This usage alludes to piling up one's chips at poker, and comparing them to those of the other players. [Early 1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.