The Greek word ῥέω
Word ῥέω
IPA r̥έɔː
Meaning to flow
See also Old Persian: ra-u-ta ‘river’
Synonyms φλύζω

Other words that might be of interest
εμπότης ‘water jar, urn’, θάλασσα ‘sea’, ύδωρ ‘water’, πόντος ‘sea’, αχελώος ‘name of a river, water’, βάλτος ‘swamp’, ξηρό ‘dry’