yield something ↔ up phrasal verb formal (see also yield)

1. to show or produce something that was hidden or difficult to find, or that people did not know about Synonym : 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 Synonym : surrender:
He would never yield up the castle to the English.

[TahlilGaran] Dictionary of Contemporary English ▲