"Pliny the Younger" is a proper noun, which is the name of a historical figure. He was a Roman writer and the nephew of another well-known figure named Pliny the Elder. Pliny the Younger lived from about 62 to 113 AD and is famous for writing letters that gave insight into the events and life of his time.
"Pliny the Younger" does not have alternative meanings since it specifically refers to the historical figure and his writings.
There are no direct synonyms for "Pliny the Younger," as it is a specific name. However, you could refer to him as a "Roman author" or "Roman letter writer" in a more general sense.
There are no known idioms or phrasal verbs that incorporate "Pliny the Younger," as it is a name rather than a common noun or verb.
Pliny the Younger is an important figure in Roman history, known for his letters that inform us about his time.