From Longman Dictionary of Contemporary Englishyield something ↔ up phrasal verb formal1 GIVEto show or produce something that was hidden or difficult to find, or that people did not know about SYN throw up New research has yielded up some surprising discoveries.2 British English to give something that belongs to you to someone else, because you are forced to SYN surrender He would never yield up the castle to the English. → yield→ See Verb table
Examples from the Corpus
yield up• Financial stocks dropped on concern that Treasury bonds yields are headed up, squeezing banks profit margins. 