Entry 1 sense Webster, 1913 Warsaw /wôr'-sôˌ/ · War·saw · IPA /ˈwɔɹsɑ/ 01 n. The black grouper (Epinephelus nigritus) of the southern coasts of the United States. 1. The black grouper (Epinephelus nigritus) of the southern coasts of the United States.(Zool.)