say it: JOO-nur
jr. is an adjective meaning "used of the younger of two persons of the same name especially used to distinguish a son from his father". It is pronounced /ˈdʒunɚ/ — JOO-nur. It carries one recorded sense.
Definitions, synonyms and semantic relations for jr. come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.