from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Designed to fold up, as for storage or carrying; collapsible: a foldup umbrella; a foldup crib.
- n. An object that folds up.
- n. Informal A complete failure or breakdown; a collapse: "The Giants are hoping that [he] can avoid his foldup of last season and help them remain in the race” ( Los Angeles Times).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Capable of being folded up.
fold + up (Wiktionary)