Tigris tig·ris UK/ˈtaɪɡɹɪs/ US/ˈtaɪɡrʌs/ rare noun 1. an Asian river; a tributary of the Euphrates River SynonymsTigris River Related words Word family Tigris River Broader terms river Parts TurkeySyriaIraq WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.
