river
‘a large stream of running water’
Lexical development traced from the Tamil root:
E. riuyere, riveer, ryuare, riuere, ryver < A.F. rivere, O.F. riviere ‘river, riverside, river bank’ < Vulgar Lat. riparia ‘riverbank, seashore’ < ripa ‘(steep) bank of a river, shore’ < ri < Tamil aruvi