Wiktionary
responsa
n. A body of written decisions and rulings given by legal scholars in response to questions addressed to them.
WordNet
responsa
See responsum
Wikipedia
Responsa
Responsa ( Latin: plural of responsum, "answers") comprise a body of written decisions and rulings given by legal scholars in response to questions addressed to them. In the modern era, the term is used to describe decisions and rulings made by scholars in historic religious law.
Usage examples of "responsa".
Nocte insequenti legati responsa ad suos referunt, obsides conficiunt.
Hic ante Apollinem ex oraculo in monte Parnasso responsa dare solitus est.
Everything pertaining to proper conduct is contained somewhere in the Talmud or the midrash or the responsa.